MOST COMMON

MC cause of Cell injury: Hypoxia

MC cause of Hypoxia: Ischemia

MC cause of Inflammation: Infection

MC cause of Impaired Wound Healing: Infection

MC cause of Acute Cor Pulmonale Pulmonary: Embolism

MC cause of Chronic Cor Pulmonale: COPD

MC cause of Superior Vena Caval Syndrome: Small Cell Carcinoma of Lung Compression

MC cause of Infection in Cystic fibrosis in Children: Staphylococcus aureus

MC cause of Infection in Cystic Fibrosis in adolescents and adults: Pseudomonas aeroginosa

MC cause of Seizure in Newborn: Hypoxia induced Ischemic Encephalopathy

MC cause of Epiglottitis in Children: Hemophilus influenza b

MC Lesion of Diabetic Retinopathy: Diffuse Glomerulosclerosis

MC Lesion in Asbestosis: Benign Pleural Plaques

MC Benign Lesion of Liver: Cavernous Hemangioma

MC Intracranial Lesion after Head Injury: Subdural Hemorrhage

MC cranial Nerve involved in Glomus tumour: Facial Nerve

MC Nerve palsy in Diabetic Retinopathy: Occulomotor

MC Nerve for Peripheral stimulation (Supramaximal Stimulation): Ulnar Nerve (Volar side of Wrist)

MC Nerve involved in Leprosy: 1st Posterior Tibial Nerve 2nd Ulnar Nerve

MC Nerve leading to Abscess: Ulnar Nerve

MC Nerve injured in anterior dislocation of shoulder: Circumflex branch of axillary nerve

MC Nerve injured in Fracture neck of Humerus: Axillary nerve

MC Nerve injured in Lunate Dislocation: Median Nerve

MC Nerve injured in Fracture medial epicondyle of Humerus: Ulnar nerve

MC Nerve injured in Supracondylar fracture of Humerus: 1st Anterior Interosseous Nerve 2nd Median Nerve 3rd Radial Nerve

MC Nerve injured in Forearm fractures especially Monteggia fracture: Posterior interosseous Nerve

MC Nerve involved in Perilunate dislocation: Median Nerve

MC Nerve injured in Posterior Dislocation of Hip: Sciatic nerve

MC Nerve injured in McBurney’s Incision: Iliohypogastric Nerve

MC Nerve involved in Thoracic outlet Syndrome: Ulnar Nerve

MC Nerve affected by Plexiform Neurofibroma: Trigeminal Nerve

MC Nerve injury in Postpartum Female: Common Peroneal Nerve

MC Route of Lead Intoxication: Inhalation

MC Occupational Cancer: Skin(Squamous cell carcinoma)

MC Mental Disorder causing death: Alzheimer’s and Other Dementia

MC Infection of Streptococcus pneumonia: Otitis Media

MC Gram Positive organism causing meningitis: Streptococcus pneumonia

MC Gram Negative organism causing meningitis: Neisseria meningitides

MC Source of Meningococcal meningitides: Carrier

MC Legionella causing Human disease: Legionella Pneumophilia

MC Diagnostic test in Lymphogranulorum venerum: Cell Culture

MC Infection Complicating Organ Transplantation: CMV

MC Genital Lesion in HIV patient: Herpes

MC organ affected in Amoebic Colitis: Caecum

MC organ affected in Visceral Leishmaniasis: Spleen

MC Diagnostic specimen for Visceral Leishmaniasis: Spleen

MC Parasitic Infection of CNS: Cysticercosis

MC Congenital Lesion complicated by Infective Endocarditis: VSD

MC association of Right sided aortic arch Tetrology of Fallot

MC condition associated with Coarctation of Aorta: Bicuspid Aortic Valve

MC Rheumatic Valvular Disease: Mitral Regurgitation

MC Renal Vein Thrombosis seen in Membranous Glomerulonephritis

MC Ectopic Ureter associated with: Dysuria

MC Symptomatic CNS infection in Neonates Rubella,HSV

MC Virus causing Diarrhoea in Infants: Rota Virus

MC Biochemical abnormality in Congenital Hypertrophic Pyloric Stenosis: Hypokalemic Hypochloremic Metabolic alkalosis with Paradoxical aciduria

MC Carcinoma of Breast: Intraductal Carcinoma

MC cells damaged during Hypoxia: Neurons

MC Thyroid carcinoma: Papillary

MC Thyroid carcinoma after radiation Papillary

MC etilogical agent for Lung Abscess: Anaerobic bacteria

MC Chronic Occupational disease in world: Silicosis

MC Renal Stones: Calcium Oxalate

MC CNS Herniation: Transtentorial Herniation

MC Demyelinating Disease: Multiple Sclerosis

MC mutated gene in Human cancer: P53

MC mutation in Hereditary Spherocytosis: Ankyrin

MC mutation in Hereditary Elliptocytosis: Spectrin

MC Congenitally absent muscle in Humans: Pectoralis Major

MC weakened muscle in Osteoarthritis: Quadriceps

MC fractured bone in carpus: Scaphoid

MC Injured organ in Blunt injury abdomen: Spleen

MC Hereditary blood coagulation disorder: Factor V Leiden

MC virus associated with Transfusion Hepatitis: HCV

MC Source of Hemorrhage in Duodenal Ulcer (Arterial): Gastroduodenal Artery

MC Lobe involved in Carcinoma Prostate: Posterior Lobe

MC Zone involved in Carcinoma Prostate: Peripheral Zone

MC Node involved in Ca Prostate Metastasis: Obturator Node

MC Congenital Deformity of Urethra: Hypospadiasis

MC Cancer in Burn Scar: Squamous Cell Carcinoma

MC Origin of Melanoma: Junctional Melanocytes

MC Clinical Pattern of Basal cell carcinoma: Nodular

MC Infection in Dry Wound in Burns: Pseudomonas

MC side of Unilateral Cleft Lip: Left

MC Salivary Gland to get Stones: Submandibular Gland

MC Type of Inflammation: Catarrhal

MC Type of Hemoglobinopathy in World: Thalassemia

MC Type of mutation causing β-Thalassemia: Splicing mutation

MC type of AML: M2

MC type of AML in Down’s Syndrome: M7

MC Type of Ca Penis: Squamous Cell Carcinoma

MC Type of Malignant Melanoma: Superficial Spreading Type

MC cause of Acute Adrenocortical Insufficiency: Abrupt withdrawal of Corticosteroids

MC cause of SIADH: Ectopic ADH by Small Cell Cancer

MC cause of Hyperaldosteronism: Conn’s Syndrome (Adrenocortical Adenoma-Left sided MC)

MC cause of Thyrotoxicosis: Grave’s Disease

MC cause of Hypothyroidism in Iodine Sufficient areas of the world: Autoimmune Hypothyroidism (Hashimoto’s Thyroiditis)

MC cause of Primary Hyperparathyroidism: Parathyroid Adenoma

MC cause of Secondary Hyperparathyroidism: Renal Failure

MC cause of Hypoparathyroidism: Surgical Removal of Parathyroid Gland

MC cause of Panhypopituitarism: Pituitary adenoma

MC cause of Cushing’s Syndrome: Administration of Exogenous Corticosteroids

MC cause of Congenital Adrenal Hyperplasia: 21α Hydroxylase Deficiency

MC cause of Right Heart Failure: Left Heart Failure

MC cause of Ascending Aorta Aneurysm: Hypertension

MC cause of Secondary Raynaud Phenomenon: Systemic Sclerosis

MC cause of Acute bacterial Endocarditis: Staphylococcus aureus

MC cause of Subacute Endocarditis: α Hemolytic Streptococci(Viridans)

MC cause of Prosthetic Valve Endocarditis: Staphylococcus epidermidis(Coagulase negative

MC cause of endocarditis in IV drug users: Staphylococcus aureus

MC cause of Bleeding during Tonsillectomy: Paratonsillar Vein

MC cause of arterial bleeding during Tonsillectomy: Tonsillar Branch of Facial Artery

MC cause of Left Recurrent Laryngeal Nerve Palsy: Ca Bronchus

MC cause of Right Recurrent Laryngeal Nerve Palsy: Thyroid Surgery

MC bacterial cause of Pustule: Streptococcus pyogenes

MC cause of Cellulitis: Streptococcus pyogenes

MC cause of Lobar Pneumonia: Streptococcus pnemoniae

MC cause of Bronchopneumonia: Staphylococcus aureus

MC cause of Otitis Media: Streptococcus pneumonia

MC cause of Septicaemia in Asplenic patient: Streptococcus pneumonia

MC cause of gas gangrene: Clostridium perfringens(A type)

MC cause of actinomycosis: Actinomyces Israeli

MC cause of mycetoma: Fungi

MC cause of UTI: E.coli

MC cause of Catheter associated UTI: E.coli

MC cause of Intraabdominal Abscess: E.coli

MC cause of Acute Bacterial Peritonitis: 1st E.coli 2nd Klebsiella

MC cause of Salmonella gastroenteritis: Salmonella typhimurum

MC bacterial cause of Traveller’s Diarrhoea: ETEC

MC viral cause of Traveller’s Diarrhoea: Rota virus

MC parasitic cause of Traveller’s Diarrhoea: Giardia

MC cause of Pyrexia of Unknown Origin: Mycobacterium tuberculosis

MC cause of Blood stained nipple discharge: Intraductal Papilloma

MC cause of Adenomatoid cancer: Follicular Carcinoma

MC cause of Thyroiditis: Hashimoto’s Thyroiditis

MC cause of Esophagitis: Esophageal Reflux

MC cause of Esophageal Perforation: Instrumentation

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