Most common

Most Commons in Medicine
M/c congenital anomaly of GI tract- Meckel's diverticulum
M/c C.N. to b paralysed in Malignant Otitis Externa- Facial N.
M/c malignancy of Endocrinal system- Thyroid carcinoma
M/c systemic association of scleritis- RA
M/c side effect of ketamine- Hallucination(auditory n visual)
M/c site of leiomyoma- Stomach
M/c primary for kruckenberg tumour aises from- Stomach
M/c site for sister Mary Joseph nodule- Stomach
M/c conduit for transplant after esophagectomy- Stomach
MCC of death in PNH : Thrombosis
MCC of death in polycythemia vera : Pulmonary thromboembolism
MCC of death in klienfelters: Infections
MCC of death in Downs : Cardiac defects
MCC of death in Amyloidosis: Renal failure
MCC of death in cirrhosis: HRS

Most common organisms

meningitis

neonatal--group b streptococcus
children--neisseria(meningococcus)
adults--e.coli

pneumonia

neonates &children--group b streptococci
adults--streptococcus pneumonia
nosocomial-gram -ve bacilli
icu--pseudomonas

sepsis

early onset-group b streptococcus
late onset--coagulase negative staphylococci

endocarditis

prosthetic valve - staph aureus,candida
native valve-staph aureus
iv drug abusers--staph aureus

1.Most common site of oral cancer
among Indians - Alveobuccal
complex .
(Buccal mucosa>Anterior
tongue>Lower alveolus) .
Most common site of oral cancer worldwide - Lip
2.Most common malignant tumor
of adult males in India -
Oropharyngeal Ca.
3.Most common site of intestinal
obstruction in Gall stone ileus -ileum (ileocaecal valve) .
4.Most common cause of non
gonococcal urethritis - Chlamydia
trachomatis .
5.Most common inherited
blindness due to mitochondrial chromosomal anomaly -
Leber's hereditary optic
neuropathy .
6.Most common cause of tricuspid
regurgitation is 2ndary -Dilatation
of rt.ventricle and Tricuspid annulus .
7.Most common presentation of
neurocysticercosis - Seizures .
8.Most common cuase of sporadic
viral encephalitis - HSV I
Most common cause of epidemic viral encephalitis- Arbovirus .
Most common cause of viral
meningitis/encephalitis - Enteroviris .
9.Most commonly injured nerve
during McBurney's incision - Iliohypogastric .
Most common hernia following
McBurney(Grid iron) incision -
Rt.inguinal .
10.Most common cause of
obliterative stricture of membranous urethra -RTA with
Fracture pelvis and rupture
urethra .
Most common cause of bulbar
urethral stricture- Gonococcal
infection . Fall astride injury usually involves
Bulbar urethra.
Prolonged catheterization may
involve any part of urethra .
11.Most common cause of
abdominal mass in neonates- Multicystic renal dysplasia .
12.Most common primary intra
ocular tumor in 5th/6th decade -
Malignant melanoma .
13.Most common cause of
recurrent genital ulcer in males - Herpes genitalis .
14.most commonly affected organ in
Amyloidosis - Kidney>Heart .
Most common cause of death in
Amyloidosis - CARDIAC
15.most comon stain used-congo red1.Most common tumor of
salivary glands - Pleomorphic
Adenoma .
2.Most common site of Peptic ulcer - 1st part of duodenum .
3.Most common site of GOO/
stenosis in peptic ulcer - 1st part of
duodenum .
4.Most common genetic cause of
liver disease in children -
5.Most common cause of
ambiguous genetalia in newborn-
Congenital adrenal hyper
plasia due to 21 hydroxylase
deficiency
6.Most common cause of female pseudo hermaphroditism -
Congenital adrenal hyper
plasia due to 21 hydroxylase
deficiency .
7.Most common genital prolapse -
Cystocoele .
8.Most common cause of Carpel
tunnel syndrome - Idiopathic .
9.Most common nerve involved
in fracture of surgical neck of
humerus- Axillary nerve .
10.Most common etiological agent of Acute osteomyelitis - Staph
aureus .
Most common site of Acute
osteomyelitis - Metaphysis .
Earliest sign to appear on X-ray -
Periosteal new bone formation . 11.Most common cause of Acute
otitis media in children -
Streptococcus pneumoniae .
12.Most common fungal infection
in febrile neutropenia - Candida .
13.Most common site of osteogenic sarcoma - Lower end of femur .
14.Most common cause of Tinea
capitis - Trichophyton tonsurans .
15.Most common cause of U/L
parotid swelling in young adult-
Pleomorphic Adenoma.

267.Most common form of
Xeroderma pigmentation is due to -
Absence of UV specific
Endonuclease .
16.Pond fracture is most
commonly seen in - Children(due to elasticity of skull bones) .
17.Ring fracture(around foramen
of Magnum) is most commonly-
Direct violence .
18.Most common manifestation of
Mumps - Parotitis(Bilateral) . (70-90%)
Most common manifestation(after
parotitis) in post pubertal males -
Orchitis .(30%)
Most common manifestation(after
parotitis) in females - Oopheritis (5%)
Most common manifestation(after
parotitis) in children - Aseptic
meningitis .
19.Most common cause/form of
Thyoiditis -Hashimoto's thyroiditis
20.Most common surgical cause of
Obstructive jaundice - CBD stone .

Most common cause of Hypergonadotrophic Hypogonadism in males- Klinefelter’s syndrome.
Most common Renal vascular Anomaly -Supernumerary renal arteries.
Most common site of Urethral carcinoma in men-Bulbomembranous urethra .
Most common Histological subtype of Urethral carcinoma-Squamous cell Ca .
Most common cysts of the spleen –Hydatid cysts .
Most common cause of Abdominal aortic Aneurysm – Atherosclerosis .
Most common cause of Meningoencephalitis in children – Enterovirus
Most commom cause of neonatal sepsis in india- klebsiella
most common cause of neonatal sepsis in western- E.coli

Most common cause of morbidity and mortality in patient undergoing major vasculr surgery is CARDIAC COMPLICATIONS....

Most common cause of sporadic viral encephalitis is HSV-1
Most common cause of viral meningitis or aseptic meningitis is ENTERO VIRUS
MOST COMMON CAUSE OF EPIDEMIC OF VIRAL MENINGITIS IS ARBOVIRUSES
Most common cause of neonatal sepsis in hospitals in India is KLEBSIELLA
The MOST COMMON abnormal opthalmoscopic findings on fundoscopy in AIDS pt r COTTON WOOL SPOTS.....
MOST C/M severe ocular complication of AIDS is CMV RETINITIS.....

MOST C/M cause of NOSOCOMIAL inf is STAPH. AUREUS.......
MOST C/M cause of TRAVELLER'S DIARROHEA is ENTEROTOXIGENIC E.COLI
MOST C/M sinusitis in children is ETHMOIDAL......
MOST C/M sinusitis in adults is MAXILLARY.....
MOST C/M Site of ca tongue is MIDDLE OF LATERAL BORDER or VENTRAL ASPECT of tongue....
MOST C/M MALIGNANT TU of adult males in india-ORAL CANCER
MOST C/M MALIGNANT TU of adult males in WORLD IS-LUNG CA
MOST C/M MALIGNANT TU of female in india is - CA CERVIX
MOST C/M MALIGNANT TU OF female in WORLD IS -CA BREAST
MOST C/M organism for ACUTE OTITIS MEDIA IN ANY AGE GROUP ID- STREPT PNEUMONIAE>H.INFLUENZA>M.CATARRHALIS.........
Most common indication for splenectomy is splenic trauma....

Most common cause of cholangitis is CBD stone....
Most common cause of pancreatitis is gall stone....
Most common cause of pancreatic pseudocyst is pancreatitis......
mc c/c myeloproliferative d/s --Polycythemia vera
mc cause of stroke -- Embolism
mc of RBC enzyme def. -- G6PD def.
mc variant of HL in INDIA -- Mixed cellulatity
Mc urinary fistula-VESICOVAGINAL Mc cause of VESICOVAGINAL FISTULA in india- Obstructed labour
Mc side effect of IUCD- BLEEDING 2ND MC side effect is PAIN
Mc site of ENDOMETRIOSIS is Ovary ..2nd mc site is POUCH OF DOUGLAS
Mc cause of Post menopausal bleeding in DEVELOPED COUNTRIES is -CA ENDOMETRIUM... Mc cause of post menopausal bleeding in DEVELOPING COUNTRIES(INDIA) is- CA CERVIX
Mc site of genital TB-FALLOPIAN TUBE.. Mc symptom of genital TB is INFERTILITY
Most common lobe involved in BPH is MEDIAN.... Mc long term complication of TURP IS RETROGRADE EJACULATION