The Lecturio Medical Concept Library

Concise knowledge for medical students and healthcare professionals

Acute Stress Disorder

Acute Stress Disorder

Adjustment disorder

Adjustment Disorder

Agoraphobia

Amphetamine Use Disorder

Amphetamine Use Disorder

Anorexia Nervosa

Anorexia Nervosa

ADHD

Attention Deficit Hyperactivity Disorder

Autism spectrum disorder

Autism Spectrum Disorder

Binge Eating Disorder

Binge Eating Disorder

Bipolar Disorder

Bipolar Disorder

Body Dysmorphic Disorder

Body Dysmorphic Disorder

Brief Psychotic Disorder Fallback

Brief Psychotic Disorder

Bulimia Nervosa

Bulimia Nervosa

Cannabis Use Disorder

Cannabis Use Disorder

Circadian sleep-wake disorders

Circadian Rhythm Sleep–Wake Disorder

Cluster A Personality Disorders

Cluster B Personality Disorders

Cluster C Personality Disorders

Cocaine use disorder Fallback Feature

Cocaine Use Disorder

Conduct Disorder

Conduct Disorder

Conversion Disorder

Conversion Disorder

Delusional Disorder

Delusional Disorder

Depersonalization derealization disorder

Depersonalization/Derealization Disorder

Disruptive mood dysregulation disorder

Disruptive Mood Dysregulation Disorder

Dissociative Amnesia

Dissociative Amnesia

Dissociative Identity Disorder

Dissociative Identity Disorder

Factitious Disorder fallback

Factitious Disorders

Female sexual dysfunction fallback featured image

Female Sexual Dysfunction

Gambling Disorder

Gambling Disorder

Generalized Anxiety Disorder

Generalized Anxiety Disorder

Hallucinogen use disorder

Hallucinogen Use Disorder

Illness anxiety disorder

Illness Anxiety Disorder

Inhalant Use Disorder

Inhalant Use Disorder

Insomnia

Insomnia

Intermittent explosive disorder

Intermittent Explosive Disorder

Kleptomania and Pyromania

Kleptomania and Pyromania

Major Depressive Disorder

Major Depressive Disorder

Penis enlargement pump

Male Sexual Dysfunction

Malingering fallback

Malingering

Narcolepsy

Narcolepsy

Nicotine Use Disorder

Nicotine Use Disorder

Obsessive-compulsive disorder

Obsessive-Compulsive Disorder (OCD)

Opioid Use Disorder Fallback Feature

Opioid Use Disorder

Oppositional defiant disorder

Oppositional Defiant Disorder

Panic disorder

Panic Disorder

Paraphilic Disorders

Paraphilic Disorders

Parasomnias

Parasomnias

Stages of healthy sleep

Physiology of Sleep

Geophagia

Pica

PTSD brain

Posttraumatic Stress Disorder (PTSD)

Psychotherapy

Psychotherapy

Restless legs syndrome

Restless Legs Syndrome

Rumination disorder

Rumination Disorder

Schizoaffective disorder

Schizoaffective Disorder

Schizophrenia

Sedatives, Hypnotics, and Anxiolytics Use Disorder

Sedatives, Hypnotics, and Anxiolytics Use Disorder

Social Anxiety Disorder

Social Anxiety Disorder

Somatic Symptom Disorder

Somatic Symptom Disorder

Specific Phobias

Specific Phobias

Suicide

Suicide

Tics and Tourette Syndrome

Tics and Tourette Syndrome

Trichotillomania lesions on scalp

Trichotillomania

Loop-sheet polymer of AAT molecules

Alpha-1 Antitrypsin (AAT) Deficiency

Isomer structure

Basics of Amino Acids

Diastereoisomers

Basics of Carbohydrates

Enzyme

Basics of Enzymes

Amino acid catabolism

Catabolism of Amino Acids

Mitosis Step by Step

Cell Cycle

Citric acid or Krebs cycle

Citric Acid Cycle

Brush border digestion

Digestion and Absorption of Carbohydrates

Normal metabolism of fructose

Disorders of Fructose Metabolism

Proofreading activity of DNA polymerase

DNA Repair Mechanisms

Simple cell cycle dna

DNA Replication

Competitive inhibition

Enzyme Inhibition

Reaction progress curve

Enzyme Kinetics

Histone acetylation

Epigenetic Regulation

Excessive ethanol consumption

Ethanol Metabolism

Vitamin D types

Fat-soluble Vitamins and their Deficiencies

Role of vitamin B12 and folic acid in DNA synthesis

Folate and Vitamin B12

Galactose (Haworth projection)

Galactosemia

Location of gluconeogenesis - oxaloacetate being converted into malate

Gluconeogenesis

Glycolysis featured image

Glycolysis

Child with I-cell disease

I-cell Disease

Utilization of ketone bodies

Ketone Body Metabolism

Tigroid pattern in MLD

Metachromatic Leukodystrophy

Ragged blue fibres

Mitochondrial Myopathies

Mucopolysaccharidosis VI

Mucopolysaccharidoses

Cherry-red spot

Niemann-Pick Disease

Structure of a nucleotide

Nucleic Acids

Uridine triacetate structure Orotic aciduria

Orotic Aciduria

Erosions, crust, and blisters are evident on the hands of this patient with PCT

Porphyrias

Gene expression from DNA

Post-transcriptional Modifications (RNA Processing)

Example of primary structure of a protein

Post-translational Protein Processing

Purine Salvage Deficiencies

2 helix–turn–helix regulatory proteins bound to DNA in the major groove

Regulation of Transcription

Basic structure of ribonucleotides

RNA Types and Structure

Genetic Code

Stages and Regulation of Translation

Transcription process and synthesis of mRNA

Stages of Transcription

Reactions contributing to proline synthesis

Synthesis of Nonessential Amino Acids

Cherry-red spot

Tay-Sachs Disease

Trace elements

Trace Elements

Urea cycle

Urea Cycle

Characteristic skin rash associated with pellagra Malabsorption

Water-soluble Vitamins and their Deficiencies

Development of the Face - 14 weeks

Development of the Brain, Spinal Cord, and Face

Embryonic development of the gut tube

Development of the Bronchial Tree

Ligamentum arteriosum

Development of the Heart

ABCDE-Assessment-fallback

ABCDE Assessment

Full-thickness necrosis of the heel due to acute limb ischemia

Acute Limb Ischemia

Heimlich maneuver

Airway Obstruction

Diagram of pulmonary edema

Altitude Sickness

Blunt abdominal trauma

Blunt Abdominal Injury

Diaphragmatic rupture

Blunt Chest Trauma

Rule of 9s in children

Burns

Carbon Monoxide Poisoning

Public access defibrillation

Cardiac Arrest

Back blows and chest thrusts

Cardiopulmonary Resuscitation (CPR)

Severe caustic injury of the pharynx

Caustic Ingestion (Cleaning Products)

Forearm compartments

Compartment Syndrome

Traumatic asphyxia due to blunt chest trauma

Crush Syndrome

Acute cyanide poisoning

Cyanide Poisoning

Decompression sickness diagnostic imaging

Decompression Sickness (DCS)

Dog bite

Dog and Cat Bites

Bilateral pulmonary parenchymal infiltrate compatible with ARDS

Drowning

Chest X-ray of pneumomediastinum and left-sided pleural effusion

Esophageal Perforation

Flail chest

Flail Chest

Foreign body aspiration X-ray

Foreign Body Aspiration

Frostbite causes mummified feet

Frostbite

Atropa belladonna

General Principles of Toxidromes

$Sonourethrogram of penile fracture$

Genitourinary Trauma

$CT image of patients skull fractures$

Head Trauma

Pathophysiology chart of heatstroke

Heatstroke

Massive right hemothorax

Hemothorax

A person with birth deformities associated with prenatal exposure to Agent Orange

Herbicide Poisoning

Treatment algorithm diagram for diabetic ketoacidosis

Hyperglycemic Crises

MRI of insulinomas

Hypoglycemia

Osborn waves

Hypothermia

Vespula sp. wasp sting

Insect and Scorpion Stings

Insecticide poisoning etiology

Insecticide Poisoning

Malignant Hyperthermia

Mediastinum

Mediastinitis

Blood supply of the small intestine through the superior mesenteric artery

Mesenteric Ischemia

Lead line in gingiva - metal poisoning

Metal Poisoning (Lead, Arsenic, Iron)

Neuroleptic malignant syndrome

Neuroleptic Malignant Syndrome

Peripheral blood smear showing normochromic RBCs with anisocytosis:poikilocytosis - neutropenia

Neutropenic Fever

Overview of Antidotes

Overview of Antidotes

Bullet in heart

Penetrating Chest Injury

Large volume pneumoperitoneum

Perforated Viscus

Subxiphoid approach for pericardiocentesis

Pericardial Effusion and Cardiac Tamponade

Pneumothorax size determination

Pneumothorax

X-ray chest PA view showing pulmonary oedema

Pulmonary Edema

Hypoxemia

Respiratory Failure

Tea coloured urine due to rhabdomyolysis

Rhabdomyolysis

Sepsis and septic shock

Sepsis and Septic Shock

Clinical characteristics of serotonin syndrome

Serotonin Syndrome

Western diamondback rattlesnake

Snakebites

Female black widow spider

Spider Bites

Staphylococcus aureus Toxic Shock Syndrome

Toxic Shock Syndrome

Lily of the valley

Toxicology of Plants

Emergency situation shock

Types of Shock

Advance directives

Advance Directives

Conflict of Interest

Conflict of Interest

Components of medical capacity

Decision-making Capacity and Legal Competence

Delivery of bad news

Delivery of Bad News

Components of valid informed consent disclosure of information

Disclosure of Information

End-of-life issues

End-of-life Issues

Malpractice

Malpractice

Confidentiality

Patient-Doctor Confidentiality

Kaposi's sarcoma nose

AIDS-defining Conditions

Retention of primary dentition X-ray

Autosomal Dominant Hyperimmunoglobulin E Syndrome

B-cell activation and maturation processes in the germinal center

B Cells

C3 deficiency

C3 Deficiency

Peripheral blood smear Chediak-Higashi syndrome

Chédiak-Higashi Syndrome

Process of phagocytosis in neutrophils

Chronic Granulomatous Disease

Common Variable Immunodeficiency (CVID)

Facial appearance diGeorge syndrome

DiGeorge Syndrome

Hereditary Angioedema (C1 Esterase Inhibitor Deficiency)

HIV replication cycle

HIV Infection and AIDS

Hyper IgM Syndrome

Hyper-IgM Syndrome

Inheritance pattern of autosomal recessive conditions

IL-12 Receptor Deficiency

X-linked recessive inheritance

IPEX Syndrome

Leukocyte migration Leukocyte adhesion deficiency type 1

Leukocyte Adhesion Deficiency Type 1

Respiratory burst diagram

Myeloperoxidase Deficiency

Dimeric structure of IgA antibody

Selective IgA Deficiency

Bubble Boy Disease

Severe Combined Immunodeficiency

Wiskott–Aldrich syndrome presenting with multiple face petechiae

Severe Congenital Neutropenia

2-signal model - T-cell dependence on costimulation

T Cells

Complement pathway

Terminal Complement Pathway Deficiency

Hemolytic reaction symptoms

Transfusion Reactions

Mast cells in allergy

Type I Hypersensitivity Reaction

Antibody-dependent cellular cytotoxicity Hypersensitivity

Type II Hypersensitivity Reaction

Immune Complex Disease Hypersensitivity III

Type III Hypersensitivity Reaction

Types of hypersensitivity: Type 4

Type IV Hypersensitivity Reaction

Components of vaccines

Vaccination

Wiskott-Aldrich syndrome: petechiae, hematoma and eczema

Wiskott-Aldrich Syndrome

X-linked agammaglobulinemia

X-linked Agammaglobulinemia

Ultrasonography of abdominal aortic aneurysm

Abdominal Aortic Aneurysms

Grade IV megaesophagus

Achalasia

Acne vulgaris pathogenesis illustrated

Acne Vulgaris

Schwannoma histology

Acoustic Neuroma

Comparison of hands acromegaly

Acromegaly and Gigantism

Albino showing actinic keratoses lesions over the chest

Actinic Keratosis (AK)

Chest X-ray shows bronchovascular prominance

Acute Bronchitis

Gallbladder wall thickening acute cholangitis

Acute Cholangitis

Clinical course of ATN

Acute Kidney Injury

Bone marrow smear from a patient with acute lymphoblastic leukemia

Acute Lymphoblastic Leukemia

AML bone marrow findings of Auer rods

Acute Myeloid Leukemia

Advanced otitis media

Acute Otitis Media

Fat tissue necrosis in acute pancreatitis

Acute Pancreatitis

Chest CT scan indicative of severe ARDS

Acute Respiratory Distress Syndrome

69-year-old female with tiredness and a persistent tan

Adrenal Insufficiency and Addison’s Disease

Child with albinism

Albinism

Three stages of alcoholic liver disease

Alcoholic Liver Disease

Alopecia areata

Alopecia

Alport syndrome kidney biopsy

Alport Syndrome

Amyloid

Amyloidosis

Rectum and anal canal schematic

Anal Cancer

Fistula, fissures and abscess

Anal Fissure

Suprasphincteric fistula

Anal Fistula

Spherocytes anemia

Anemia: Overview

Angioedema of the lips

Angioedema

Process of ankylosis

Ankylosing Spondylitis

Bilateral cryptophthalmos anomalies of the cornea

Anomalies of the Cornea

Gram stain of Bacillus anthracis

Anthrax

Livedo reticularis

Antiphospholipid Syndrome

Stanford and DeBakey classifications for aortic dissection

Aortic Dissection

Aortic Regurgitation

Aortic Regurgitation

Aortic stenosis heart sounds

Aortic Stenosis

Features of aplastic anemia

Aplastic Anemia

McBurneys Point photograph

Appendicitis

12-lead ECG Arrhythmogenic right ventricular cardiomyopathy (ARVC)

Arrhythmogenic Right Ventricular Cardiomyopathy

Malignant peritoneal mesothelioma as a cause of ascites

Ascites

Stage IV splenic injury

Asplenia

Asthma

Asthma

Contrast MRI showing glioblastoma multiforme

Astrocytoma

Partial atelectasis of the right upper lobe

Atelectasis

Atherosclerosis grade 1

Atherosclerosis

Erythema and lichenification in the kneefolds of a patient with atopic dermatitis

Atopic Dermatitis (Eczema)

ECG atrial fribrillation

Atrial Fibrillation

Slow atrial flutter

Atrial Flutter

First-degree AV block ECG

Atrioventricular Block

Warm autoimmune hemolytic anemia

Autoimmune Hemolytic Anemia

Jaundice

Autoimmune Hepatitis

Gross pathology from nephrectomy in a patient with autosomal dominant polycystic kidney disease

Autosomal Dominant Polycystic Kidney Disease

Ultrasonography of the right kidney demonstrating autosomal recessive polycystic kidney disease

Autosomal Recessive Polycystic Kidney Disease

Esophageal granular cell tumor colliding with intramucosal adenocarcinoma

Barrett’s Esophagus

Different Channelopathies in Bartter’s syndrome

Bartter Syndrome

Nodular basal cell carcinoma of the nose

Basal Cell Carcinoma

Histopathological exam of Becker muscular dystrophy

Becker Muscular Dystrophy

Hepatic adenoma

Benign Liver Tumors

Benign prostatic hyperplasia

Benign Prostatic Hyperplasia

Sagittal cut of the upper eye lid

Blepharitis

Ptosis in botulism

Botulism

Bowen’s disease in an 81-year-old-woman

Bowen Disease and Erythroplasia of Queyrat

Bowenoid papulosis skin biopsy

Bowenoid Papulosis

Sinus bradycardia at 42 bpm

Bradyarrhythmias

Brain Abscess

Bronchiectasis pathophysiology

Bronchiectasis

HRCT in bronchiolitis obliterans

Bronchiolitis Obliterans

Acute Budd-Chiari Syndrome Doppler

Budd-Chiari Syndrome

Cutaneous findings in bullous pemphigoid

Bullous Pemphigoid and Pemphigus Vulgaris

Pathophysiology of Cancer Carcinogenesis

Carcinogenesis

Fine-needle aspiration of the liver showing metastatic carcinoid

Carcinoid Tumors and Syndrome

Gross pathology of excised left atrial myxoma

Cardiac Myxoma

Carotid artery stenosis

Carotid Artery Stenosis

Eye disease simulation cataract

Cataracts in Adults

Summarizing the pathophysiology of celiac disease

Celiac Disease

Coagulative necrosis in kidney tissue

Cell Injury and Death

Histopathology of pulmonary anthracosis

Cellular Accumulations

Heart left ventricular hypertrophy

Cellular Adaptation

Left lower extremity cellulitis

Cellulitis

Chalazion

Haemophilus ducreyi bacteria

Chancroid

Chlamydial intranuclear inclusions

Chlamydial Infections

Gallbladder obstruction

Cholecystitis

Gallstones

Cholelithiasis

Chondrosarcoma on shoulder

Chondrosarcoma

Cytomegalovirus retinitis

Chorioretinitis

Activated eosinophils in hypereosinophilic syndrome

Chronic Eosinophilic Leukemia

Hydronephrosis on renal ultrasound

Chronic Kidney Disease

Blood smear from an adult with marked lymphocytosis

Chronic Lymphocytic Leukemia

Bone marrow examination for chronic myeloid leukemia

Chronic Myeloid Leukemia

Chest/abdomen X-ray showing right pneumothorax chronic obstructive pulmonary disease (COPD)

Chronic Obstructive Pulmonary Disease (COPD)

Chronic pancreatitis with arrows

Chronic Pancreatitis

Exemplary photographs for a spectrum of clinical manifestations of chronic venous disease

Chronic Venous Insufficiency

Pathology of alcoholic liver cirrhosis

Cirrhosis

Shoulder anatomy Biodigital

Clavicle Fracture

Segment of resected colon in the unfixed state containing an invasive colorectal carcinoma and two adenomatous polyps

Colon Polyps

Colon polyp

Colorectal Cancer

Numerous genital warts on the labia majora

Condylomata Acuminata (Genital Warts)

Signs of CHF

Congestive Heart Failure

Conjunctivitis

Conjunctivitis

The Bristol Stool Scale

Constipation

Bronchi and Lungs

Cor Pulmonale

Coronary heart disease pathophysiology

Coronary Heart Disease

PTEN protein pathophysiology of Cowden syndrome

Cowden Syndrome

MRI imaging of craniopharyngioma

Craniopharyngioma

Noncaseating granuloma Crohns disease

Crohn’s Disease

Steeple Sign

Croup

Path of descent of the testis

Cryptorchidism

Cushing syndrome baby

Cushing’s Syndrome

Newborn screening

Cystic Fibrosis

Lacrimal apparatus anatomy

Dacryocystitis

Deep venous thrombosis

Deep Vein Thrombosis

Delirium

Delirium

Heliotrope rash in dermatomyositis

Dermatomyositis (DM)

ADH regulation and production

Diabetes Insipidus

The pancreas

Diabetes Mellitus

Osmotic diarrhea

Diarrhea

Four-chamber view cine-MRI showing dilated cardiomyopathy

Dilated Cardiomyopathy

Gram-positive Corynebacterium diphtheriae bacteria

Diphtheria

Location of the major salivary glands and their ducts

Diseases of the Salivary Glands

Essential anatomy of the eye illustration

Diseases of the Uvea

Anatomy of vertebral and carotid arteries

Dissection of the Carotid and Vertebral Arteries

Schistocytes as diagnostic of DIC

Disseminated Intravascular Coagulation

CT scan of perforated diverticulitis

Diverticular Disease

Tissue sample of Donovanosis patient

Donovanosis

Lobular hepatitis secondary to ibuprofen

Drug-induced Liver Injury

Gowers_sign

Duchenne Muscular Dystrophy

Esophagogastroduodenoscopy cicatricial stricture

Dysphagia

Myxedema edema

Edema

Laxity of wrist and fingers in Ehlers-Danlos syndrome

Ehlers-Danlos Syndrome

Dislocated elbow

Elbow Dislocation

Contrast enhancement in the posterior side of the bilateral insular cortex, right hypothalamus, and inferior left frontal cortex consistent with encephalitis

Encephalitis

Intraoperative vegetation findings on the aortic valve

Endocarditis

Hypopyon and track of pus with endophthalmitis associated with glaucoma shunt intraluminal stent exposure

Endophthalmitis

Salmonella typhi

Enteric Fever (Typhoid Fever)

MRI scan reveals an anaplastic ependymoma

Ependymoma

Scrotal doppler ultrasound

Epididymitis and Orchitis

Doctor with child Epiglottitis

Epiglottitis

Erectile dysfunction pathogenesis

Erectile Dysfunction

Facial erysipelas

Erysipelas

Epidermal Changes in Erythema Multiforme

Erythema Multiforme

Erythema nodosum - atypical presentation

Erythema Nodosum

Esophageal cancer staging

Esophageal Cancer

Cloxacillin-induced esophagitis

Esophagitis

Bone marrow biopsy in essential thrombocythemia

Essential Thrombocythemia

Ewing sarcoma surgery

Ewing Sarcoma

Whipple Pancreaticoduodenectomy

Exocrine Pancreatic Cancer

Endoscopic view of established, multiple FAP adenomas

Familial Adenomatous Polyposis

Multiple pedunculated and sessile, non-bleeding juvenile polyps

Familial Juvenile Polyposis

Time course of a typical fever

Fever

The string-of-beads feature in medial fibromuscular dysplasia

Fibromuscular Dysplasia

Gas gangrene shoulder

Gas Gangrene

Linitis plastica

Gastric Cancer

Primary jejunal gastrinoma

Gastrinoma

Corpus mucosa

Gastritis

Campylobacter species

Gastroenteritis

Esophageal reflux

Gastroesophageal Reflux Disease

Infectious colitis colonoscopy

Gastrointestinal Bleeding

Reduction in genu valgum

Genu Valgum

Pathologic genu varum

Genu Varum

Giant cell arteritis 3

Giant Cell Arteritis

Nephron with Gitelman syndrome

Gitelman Syndrome

Free flow of aqueous humor

Glaucoma

MRI scan glioblastoma enhanced

Glioblastoma Multiforme

Glucagonoma

Glucagonoma

G6PD band Xq28 illustration

Glucose-6-phosphate Dehydrogenase (G6PD) Deficiency

Patient from South Sudan with a goiter

Goiter

Gonococcal lesion on skin

Gonorrhea

Gout illustration

Gout

C-ANCA Granulomatosis

Granulomatosis with Polyangiitis

Ophthalmopathy due to Graves disease

Graves’ Disease

Gynecomastia

Gynecomastia

Peripheral blood smear showing a hairy cell

Hairy Cell Leukemia

Thyroid uptake scan

Hashimoto’s Thyroiditis

Optic nerve hemangioblastoma

Hemangioblastoma

CLL with autoimmune hemolytic anemia

Hemolytic Anemia

Jaundice phototherapy

Hemolytic Disease of the Fetus and Newborn

Hemophilia subcutaneous ecchymoses

Hemophilia

Bronchiectasis imaging

Hemoptysis

Anal canal anatomy

Hemorrhoids

Purpura evident on the distal extremities of a pediatric patient

Henoch-Schönlein Purpura

Effects of hyperammonemia on the glutamate-glutamine cycle

Hepatic Encephalopathy

Metastases in the liver

Hepatocellular Carcinoma (HCC) and Liver Metastases

Itraconazole associated quadriparesis and edema

Hepatorenal Syndrome

Liver biopsy for iron hemochromatosis

Hereditary Hemochromatosis

Hereditary spherocytosis

Hereditary Spherocytosis

Single varicella zoster virus herpes zoster

Herpes Zoster (Shingles)

Stage II hidradenitis suppurativa in the axilla

Hidradenitis Suppurativa

$Unspecified displaced fracture of the right femur with surgical repair$

Hip Fractures

Hirschsprung disease seen on contrast barium enema study

Hirschsprung Disease

Fine-needle aspiration of Hodgkin lymphoma

Hodgkin Lymphoma

Upper eyelid stye

Hordeolum (Stye)

Horner syndrome

Horner Syndrome

Anterograde pyelography demonstrates Grade III left-sided hydronephrosis

Hydronephrosis

Adrenal gland Conn syndrome

Hyperaldosteronism

Calcium Metabolism

Hypercalcemia

Pitting oedema of right leg

Hypercoagulable States

Hyperkalemia EKG

Hyperkalemia

Plasma Osmolality

Hypernatremia

Parathyroid adenoma

Hyperparathyroidism

Prolactinoma

Hyperprolactinemia

Hypersensitivity pneumonitis biopsy

Hypersensitivity Pneumonitis

STE secondary to left ventricular hypertrophy

Hypertension

Acute hypertensive retinopathy

Hypertensive Retinopathy

Keloid

Hypertrophic and Keloid Scars

Hypertrophic cardiomyopathy shown on imaging

Hypertrophic Cardiomyopathy

Hypoaldosteronism

Trousseau's sign of latent tetany

Hypocalcemia

Mucocutaneous telangiectases

Hypocoagulable Conditions

Pathogenesis of primary versus secondary hypogonadism

Hypogonadism

ECG changes seen in hypokalemia

Hypokalemia

Trousseau's sign of latent tetany

Hypoparathyroidism

Hypothalamic–pituitary complex

Hypopituitarism

Hypotension

Hypotension

Symptoms of hypothyroidism

Hypothyroidism

Lizard skin appearance of ichthyosis

Ichthyosis Vulgaris

IgA nephropathy

IgA Nephropathy

Immune thrombocytopenic purpura - purple spots on legs

Immune Thrombocytopenic Purpura

Atopic dermatitis

Impetigo

Pseudofolliculitis barbae

Infectious Folliculitis

Etiologies of infertility in couples (left) and women (right)

Infertility

Radiographic and surgical findings insulinoma

Insulinomas

Interleukins

Interleukins

Defect of horizontal gaze in internuclear ophthalmoplegia

Internuclear Ophthalmoplegia

Typical high-resolution computed tomography (HRCT) pattern of usual interstitial pneumonia

Interstitial Lung Diseases

Acute mesenteric ischemia CT angiography

Intestinal Ischemia

Intraoperative image of an ileoileal intussusception

Intussusception

Peripheral blood smear shows hypochromic microcytic cells

Iron Deficiency Anemia

mind-gut interaction contributing to the pathophysiology of IBS

Irritable Bowel Syndrome

Jaundice eye

Jaundice

Strawberry tongue

Kawasaki Disease

Posterior knee dislocation on X-ray

Knee (Tibiofemoral Joint) Dislocation

Anatomic ACL reconstruction with bone-patellar tendon-bone (BTB) graft

Knee Ligament Injuries

Herpes infection pap smear

Labial and Genital Herpes

Pathogenesis of Lactose Intolerance Symptoms

Lactose Intolerance

Lambert-Eaton Myasthenic Syndrome pathophysiology

Lambert-Eaton Myasthenic Syndrome

Severe colonic dilation

Large Bowel Obstruction

The larynx in cough

Laryngitis

Histopathology of lentigo maligna

Lentigo Maligna

Hand deformity due to leprosy

Leprosy

Homogenous oral leukoplakia

Leukoplakia

Lichen planus on wrists

Lichen Planus

Inheritance of Liddle syndrome

Liddle Syndrome

Subcutaneous lipoma

Lipoma

Tosades de Pointes

Long QT Syndrome

Adenocarcinoma of the lung

Lung Cancer

Lymphadenopathy

Lymphadenopathy

Peripheral blood smear with occasional small lymphocytes

Lymphocytosis

Lynch syndrome cancer risk comparison

Lynch syndrome

Eye disease simulation age-related macular degeneration

Macular Degeneration

Alzheimer’s disease on MRI

Major Neurocognitive Disorders

Characteristic skin rash associated with pellagra Malabsorption

Malabsorption and Maldigestion

Mesothelioma

Malignant Mesothelioma

Esophagogastroduodenoscopy revealed Mallory-Weiss syndrome

Mallory-Weiss Syndrome (Mallory-Weiss Tear)

MALT lymphoma of the colon

MALT Lymphoma

Cardiovascular magnetic resonance marfan syndrome

Marfan Syndrome

Axial SPECT:CT image of the Meckel’s diverticulum

Meckel’s Diverticulum

Head MRI showing a cerebellar medulloblastoma

Medulloblastoma

Toxic megacolon in operation

Megacolon

Peripheral smear of case 2 demonstrated macrocytosis

Megaloblastic Anemia

Cutaneous melanoma

Melanoma

Hyperpigmentation melasma right

Melasma

Meningioma histology

Meningioma

Meningeal irritation evident on contrast-enhanced MRI

Meningitis

Hormones leading up to, during, and after menopause

Menopause

Metabolic Syndrome

Metabolic Syndrome

Color code suggestive of methemoglobin Methemoglobinemia

Methemoglobinemia

Pressure loop mitral regurgitation

Mitral Regurgitation

Mitral valve stenosis

Mitral Stenosis

Mitral prolapse heart

Mitral Valve Prolapse

Molluscum contagiosum

Molluscum Contagiosum

Infectious Mononucleosis

Mononucleosis

Main types of multiple endocrine neoplasia syndromes

Multiple Endocrine Neoplasia

Bone marrow infiltration multiple myeloma

Multiple Myeloma

Progression types of multiple sclerosis

Multiple Sclerosis

Ptosis in myasthenia gravis

Myasthenia Gravis

Bone marrow aspirate in myelodyplastic syndrome

Myelodysplastic Syndromes

Natural history of the vulnerable/unstable plaque

Myocardial Infarction

Cardiac MRI demonstrating mid-wall gadolinium enhancement of the lateral wall

Myocarditis

Clinical presentation of two adults with myotonic dystrophy

Myotonic Dystrophies

Dilated bowel loops on an abdominal radiograph

Necrotizing Enterocolitis

Necrotizing fasciitis - painful erythema

Necrotizing Fasciitis

Struvite stone crystals

Nephrolithiasis

Ultrasound neuroblastoma

Neuroblastoma

Wright stain of a peripheral blood smear - neutropenia

Neutropenia

Nevus of Ito

Nevus/Nevi

Progression of liver disease

Nonalcoholic Fatty Liver Disease

Nontrhombotic embolism contrast induced nephropathy

Nonthrombotic Embolism

Obstructive sleep apnea

Obstructive Sleep Apnea

Oligodendroglioma

Oligodendroglioma

Oral carcinoma with exophytic tongue masses

Oral Cancer

Upper and lower eyelid edema and erythema and conjunctival chemosis

Orbital and Preseptal Cellulitis

$Left orbital floor fracture$

Orbital Fractures

Bouchards nodes

Osteoarthritis

Osteochondritis dissecans knee MRI

Osteochondritis Dissecans

Genu valgum

Osteomalacia and Rickets

Radiograph chronic osteomyelitis

Osteomyelitis

Osteoporosis posture

Osteoporosis

Secondary osteosarcoma

Osteosarcoma

Patient with otitis externa

Otitis Externa

Continuous ambulatory peritoneal dialysis

Overview and Types of Dialysis

$Different types of fractures$

Overview of Bone Fractures

Four-chamber view cine-MRI showing dilated cardiomyopathy

Overview of Cardiomyopathies

Pthirus pubis louse

Overview: Sexually Transmitted Infections

Pagetic human femur

Paget’s Disease of Bone

Solitary insulinoma in the head of the pancreas CT

Pancreatic Neuroendocrine Tumors (PanNETs)

CT scan right parapharyngeal abscess

Parapharyngeal Abscess

Urine sample intravascular hemolysis with hemoglobinuria

Paroxysmal Nocturnal Hemoglobinuria

$CT scan showing a fracture of the ilium$

Pelvic Fractures

Diagnosis of pelvic inflammatory disease

Pelvic Inflammatory Disease

Cross section of the penis

Penile Cancer

Peptic ulcer disease

Peptic Ulcer Disease

Locations of perianal, ischiorectal, intersphincteric, and supralevator abscesses

Perianal and Perirectal Abscess

Acute pericarditis ST elevation

Pericarditis

Popliteal arterial long occlusion case

Peripheral Artery Disease

Peritonsilar abscess

Peritonsillar Abscess

Bordetella pertussis on charcoal agar

Pertussis (Whooping Cough)

Mucocutaneous pigment macules in a very young patient

Peutz-Jeghers Syndrome

Streptococcal Pharyngitis

Pharyngitis

Bilateral nodular lesions in the right and left adrenal glands (phaeochromocytoma)

Pheochromocytoma

Pupillary response to light

Physiology and Abnormalities of the Pupil

MRI pituitary tumor

Pituitary Adenomas

Pityriasis rosea on back

Pityriasis Rosea

Ellis–Damoiseau line

Pleural Effusion

Pleuritis X-ray

Pleuritis

Pulmonary fibrosis

Pneumoconiosis

Chest x-ray dense infiltration

Pneumonia

Sonograph polycystic ovaries

Polycystic Ovarian Syndrome

Different RBC morphology in a patient with PV

Polycythemia Vera

Dropped head syndrome

Polymyositis

Timeline of postoperative complications

Postoperative Care

Uterine massage

Postpartum Hemorrhage

Acute poststreptococcal glomerulonephritis

Poststreptococcal Glomerulonephritis

Human sex differentiation

Primary Amenorrhea

Primary biliary cirrhosis

Primary Biliary Cholangitis