Summative Revision Notes
These notes summarise the seven Morning Rounds in the GIT series. They are written for rapid pre-exam revision — not first-time learning. Each section distils the core facts, differentials, and clinical traps from its round. For the full clinical reasoning behind every question, return to the debrief panels in the quizzes.
The sequence follows the series: proximal to distal, parenchymal to vascular, medical to surgical.
Primary mechanism: transient LES relaxation (TLESR). First-line treatment: PPI. Gold standard investigation: 24-hr ambulatory pH monitoring. Red flags mandating urgent endoscopy: dysphagia, odynophagia, unintentional weight loss, haematemesis, anaemia.
Definition: replacement of squamous epithelium by specialised intestinal metaplasia with goblet cells. Risk: adenocarcinoma (30–40× — NOT squamous cell carcinoma). Sequence: GERD → Barrett's → low-grade dysplasia → high-grade dysplasia → adenocarcinoma. Surveillance: lifelong PPI + endoscopy.
Pathology: degeneration of inhibitory (VIP/NO) neurons in Auerbach's plexus. Dysphagia for both solids and liquids from onset. Barium: bird-beak sign. Gold standard: oesophageal manometry (absent peristalsis + incomplete LES relaxation). Treatment: pneumatic dilation / Heller myotomy / POEM.
H. pylori: urease-positive Gram-negative spiral rod. Causes ~90% DU, ~70% GU. Urea breath test: non-invasive gold standard for eradication confirmation (serology is useless post-treatment). DU: pain relieved by food, no malignant potential. GU: pain worsened by food, must biopsy to exclude malignancy. Triple therapy: PPI + clarithromycin + amoxicillin × 14 days.
| Eponym | Site | Route |
|---|---|---|
| Virchow's node (Troisier's sign) | Left supraclavicular | Thoracic duct |
| Sister Mary Joseph's nodule | Periumbilical | Falciform ligament lymphatics |
| Krukenberg tumour | Both ovaries | Transperitoneal |
| Blumer's shelf | Pouch of Douglas (rectal exam) | Transperitoneal |
Lauren classification: Intestinal type (H. pylori, antrum, glandular, better prognosis) vs Diffuse type (signet ring cells, linitis plastica, CDH1 mutation, worse prognosis).
Barrett's → adenoCa, never SCC DU: food relieves; GU: food worsens Serology useless post-eradication
Recurrent abdominal pain ≥1 day/week for ≥3 months, associated with ≥2 of: related to defaecation, change in stool frequency, change in stool form. Red flags that exclude IBS: age >50, rectal bleeding, nocturnal symptoms, weight loss, anaemia, elevated CRP, family history of CRC/IBD/coeliac.
| Feature | Crohn's Disease | Ulcerative Colitis |
|---|---|---|
| Distribution | Any part, mouth to anus | Colon only, starts at rectum |
| Pattern | Skip lesions | Continuous |
| Depth | Transmural | Mucosal only |
| Histology | Non-caseating granulomas | Crypt abscesses |
| Complications | Fistulae, strictures, abscesses, perianal disease | Toxic megacolon, CRC risk after 8–10 yr |
| Smoking | Worsens CD | Protective in UC |
| PSC association | Rare | Strong (70–80% of PSC = UC) |
ITB: ileocaecal site, caseating granulomas, patulous ileocaecal valve, Stierlin's sign on barium, AFB culture, IGRA positive. CD: non-caseating granulomas, narrowed ileocaecal valve. Must exclude ITB before anti-TNF therapy — anti-TNF reactivates latent TB.
HLA-DQ2 (~95%) / HLA-DQ8. Screening: anti-tTG IgA (check total IgA simultaneously — IgA deficiency gives false negative). Gold standard: duodenal biopsy (villous atrophy + crypt hyperplasia + raised IEL). Most common adult presentation in India: iron-deficiency anaemia refractory to oral iron. Complication: EATL (enteropathy-associated T-cell lymphoma). Treatment: strict lifelong gluten-free diet.
Secretory: watery, no blood, no fever, stool WBC absent, ORS cornerstone. Mechanism: enterotoxin → cAMP → Cl³ secretion (cholera). Invasive: blood + mucus, fever, tenesmus, stool WBC positive. Organisms: Shigella, Campylobacter, Entamoeba, EIEC. E. coli O157:H7: antibiotics CONTRAINDICATED (increase Shiga toxin release → HUS). HUS triad: MAHA + thrombocytopaenia + AKI.
Anti-TNF + TB = disseminated TB risk O157: no antibiotics CD: smoking worsens; UC: smoking protects
Both: RNA viruses, feco-oral, self-limiting in immunocompetent, no chronicity. HEV in pregnancy (3rd trimester): mortality 20–25%. HEV = epidemic waterborne jaundice in India. Chronic HEV only in immunosuppressed (transplant patients). HAV vaccine available; no licensed HEV vaccine in India.
Anti-HCV = exposure/screening only. HCV RNA (PCR) = active infection (becomes positive 1–2 weeks post-exposure). Genotype 3 = commonest in India. SVR (sustained virological response) = HCV RNA undetectable 12 weeks post-treatment = cure. Sofosbuvir + velpatasvir × 12 weeks: SVR >95% pan-genotypic. Post-SVR: anti-HCV remains positive for life; patients with cirrhosis still need HCC surveillance.
HDV is defective — requires HBsAg. Superinfection (HDV into chronic HBV carrier) > co-infection for FHF risk. FHF in India: HEV #1 (pregnancy), HAV, HBV, HDV superinfection. In the West: paracetamol OD #1 → treat with N-acetylcysteine. King's College Criteria guide liver transplant listing.
HEV + pregnancy = 20–25% mortality Window: anti-HBc IgM only HCV now curable >95% Genotype 3: India's commonest
AST:ALT >2:1 (neither usually exceeds 300 IU/L — this ceiling excludes viral hepatitis). GGT: most sensitive marker of alcohol use. Maddrey's DF = 4.6 × (PTpatient − PTcontrol) + bilirubin. MDF ≥32 = severe; prednisolone 40 mg × 28 days if no infection / GI bleed / renal failure. Lille score at day 7 assesses response.
Steatosis + metabolic syndrome. Liver biopsy = only way to distinguish simple steatosis from NASH. FibroScan assesses fibrosis but cannot diagnose NASH. Weight loss 7–10% = only proven treatment. Statins are NOT contraindicated in NAFLD. Lean NAFLD common in Indians (visceral adiposity at normal BMI).
| Complication | Diagnosis | Treatment |
|---|---|---|
| Variceal bleed | Endoscopy | Terlipressin + EBL + prophylactic antibiotics + albumin |
| Ascites | SAAG ≥1.1 = portal HTN | Salt restriction + spironolactone ± furosemide; LVP + albumin |
| SBP | Ascitic PMN >250 cells/mm³ | Cefotaxime IV + albumin; prophylaxis: norfloxacin |
| HRS | Functional AKI in cirrhosis | Terlipressin + albumin |
| HE | Clinical (asterixis, confusion) | Treat precipitant; lactulose; rifaximin; NO protein restriction |
ATP7B gene (chromosome 13). Copper accumulates in liver, brain, cornea, kidney. Kayser-Fleischer rings on slit-lamp (>95% with neurological disease; may be absent in hepatic-only). Best screening test: 24-hr urinary copper >100 µg/day. Serum ceruloplasmin low in ~85%. Gold standard: liver biopsy with copper quantification. Treatment: D-penicillamine (first-line) or trientine; zinc for maintenance. Liver transplant = curative.
GI bleeding = #1 precipitant (blood = protein load). Others: infection/SBP, constipation, diuretic excess, sedatives/opioids, TIPS, high protein diet. Management: treat precipitant → lactulose → rifaximin. Protein restriction is harmful — maintain 1.2–1.5 g/kg/day.
AST:ALT >2:1 = alcohol SBP: PMN >250, E. coli #1 Wilson's: young + liver + neuro + haemolysis Protein restriction in HE = harmful myth
Causes: GET SMASHED (Gallstones #1 overall; Alcohol #1 in males in India; Trauma; Steroids; Mumps; Autoimmune; Scorpion sting — Mesobuthus tamulus, India; Hyperlipidaemia/hypercalcaemia; ERCP; Drugs). Ranson ≥3 = severe. Atlanta 2012: mild / moderately severe / severe (persistent organ failure >48 hr). Cornerstone: aggressive IV fluid resuscitation (Ringer's lactate preferred). Antibiotics: ONLY for confirmed infected necrosis. ERCP: ONLY for gallstone pancreatitis + cholangitis.
| Entity | Timing | Wall | Contents | Treatment |
|---|---|---|---|---|
| APFC | <4 weeks | None | Fluid | Observe (most resolve) |
| Pseudocyst | >4 weeks | Fibrous (no epithelium) | Fluid only | Endoscopic drainage if symptomatic |
| ANC | <4 weeks | None | Necrosis + fluid | Antibiotics if infected |
| WON | >4 weeks | Well-defined | Solid necrotic debris | Step-up (drain → necrosectomy) |
Cullen's sign: periumbilical bruising. Grey Turner's sign: flank bruising. Both = haemorrhagic pancreatitis. Hypocalcaemia: saponification (lipase releases FAs which bind Ca²♠).
Young, non-alcoholic, tropical background. Large intraductal calculi on plain X-ray. Ketosis-resistant diabetes (some glucagon preserved). Steatorrhoea = exocrine insufficiency. SPINK1 mutation common in India. Treatment: PERT (pancreatin with meals) + insulin.
Head: painless progressive jaundice, Courvoisier's sign (palpable non-tender GB = malignant obstruction, not stones), double duct sign (CBD + pancreatic duct dilation on MRCP), CA 19-9 for monitoring. Body/tail: pain radiating to back relieved by leaning forward, late presentation, new-onset DM in elderly. Curative operation: Whipple's (pancreaticoduodenectomy). Only ~20% resectable at diagnosis.
Insulinoma: Whipple's triad (fasting hypoglycaemia + glucose <45 mg/dL + relief with glucose). Elevated C-peptide = endogenous insulin; suppressed C-peptide = exogenous injection. Treatment: surgical resection; diazoxide bridge. ZES (Zollinger-Ellison): gastrinoma → refractory atypical ulcers + diarrhoea; fasting gastrin >1000 pg/mL; secretin stimulation test (paradoxical rise). Always exclude MEN-1 (3 Ps: parathyroid, pituitary, pancreas).
Scorpion sting: M. tamulus, India Antibiotics: only infected necrosis FCPD: large calculi + ketosis-resistant DM Elevated C-peptide = endogenous insulin
| Type | Cause | X-ray | Location |
|---|---|---|---|
| Cholesterol | 5 Fs (Fat, Female, Fertile, Fair, Forty); OCP, rapid weight loss, Crohn's | Radiolucent (15% calcified) | Gallbladder |
| Black pigment | Haemolysis (sickle cell, spherocytosis, thalassaemia); cirrhosis | Radio-opaque | Gallbladder |
| Brown pigment | Infected bile (E. coli, Ascaris); common in Asia | Radiolucent | Bile ducts |
Murphy's sign: inspiratory arrest on deep RUQ palpation. Early laparoscopic cholecystectomy within 72 hours is preferred over interval. Acalculous cholecystitis: ICU patients, TPN, burns — no stones, higher mortality. Rigler's triad (gallstone ileus): pneumobilia + SBO + ectopic calcified stone on plain X-ray.
Charcot's triad: RUQ pain + fever + jaundice = CBD stone with ascending cholangitis. Reynold's pentad: Charcot's triad + altered consciousness + septic shock = Grade III severe acute cholangitis → emergency ERCP. Most common organism: E. coli. MRCP = gold standard non-invasive investigation for CBD stones.
MRCP: beads on a string (multifocal strictures alternating with dilatations). Association: UC in 70–80% of PSC patients. Most feared complication: cholangiocarcinoma (10–15% lifetime risk). UDCA improves LFTs but does not alter prognosis. Liver transplantation = only treatment that improves survival. Always check IgG4 to exclude IgG4-related sclerosing cholangitis (steroid-responsive mimic).
Murphy's: inspiratory arrest, not tenderness alone Reynold's: Charcot's + confusion + shock PSC + UC = cholangiocarcinoma risk
Surveillance: 6-monthly USS (± AFP) in all cirrhotic patients. Non-invasive diagnosis: arterial hyperenhancement + portal venous washout on dynamic CT/MRI (LI-RADS 5). BCLC staging: 0/A = resection or ablation (curative); B = TACE; C = sorafenib/lenvatinib; D = palliative. Milan criteria for transplant: single ≤5 cm or up to 3 nodules ≤3 cm, no vascular invasion. Fibrolamellar HCC: young patient, no cirrhosis, normal AFP, lamellar fibrous bands on biopsy; best prognosis of all HCC variants. Sorafenib: multikinase inhibitor (RAF + VEGFR + PDGFR); BCLC stage C first-line (now atezolizumab + bevacizumab preferred in fit Child-Pugh A).
| Condition | Key Feature | Treatment Pearl |
|---|---|---|
| Haemorrhoids | Grade II: spontaneous reduction; Grade III: manual; Grade IV: permanent | RBL for Grade II–III; haemorrhoidectomy for Grade III–IV |
| Anal Fissure | Posterior midline ~90%; IAS hypertonia perpetuates chronicity | GTN 0.2% first-line; LIS for refractory; botox second-line |
| Fistula-in-ano | Goodsall's rule: posterior external opening → posterior midline internal | Fistulotomy for low; seton for high (preserve sphincter) |
| Anorectal abscess | Perianal most common; ischiorectal: deep, no visible swelling | Incision and drainage — never antibiotics alone |
| Fournier's gangrene | Necrotising fasciitis of perineum; diabetes + immunosuppression | Emergency wide debridement + broad-spectrum antibiotics |
Carcinoid syndrome only with liver metastases (gut serotonin inactivated by first-pass hepatic metabolism). Right-sided cardiac disease (TR + PS) — left heart protected by pulmonary metabolism. Diagnosis: 24-hr urinary 5-HIAA. Treatment: octreotide LAR (symptom control + antiproliferative). Appendiceal carcinoid: <2 cm → appendicectomy; >2 cm → right hemicolectomy.
Classic: pain out of proportion to physical findings in elderly patient with AF. SMA embolism = most common cause. Thumbprinting on plain X-ray = submucosal oedema (ischaemia but not yet infarcted). Pneumatosis intestinalis = transmural infarction (very poor prognosis). Investigation: CT angiography. Treatment: emergency surgical embolectomy ± bowel resection. Mortality >60% if diagnosis delayed >12–24 hours.
UGIB: Rockall score (pre + post endoscopy); Glasgow-Blatchford score (predicts need for intervention). Forrest Ia/Ib/IIa = endoscopic treatment. Dual therapy superior to monotherapy. IV PPI before endoscopy. Erythromycin IV 30 min before endoscopy clears stomach. LGIB by age: young = IBD/infective/haemorrhoids; elderly = diverticular bleeding (#1 major LGIB) / angiodysplasia / CRC. Meckel's rule of 2s. Colonoscopy = first-line investigation after resuscitation.
Pain out of proportion + AF = mesenteric ischaemia Carcinoid heart: right-sided only Forrest Ia/Ib/IIa: treat endoscopically Fibrolamellar: young, no cirrhosis, normal AFP
These seven rounds are thorough, not encyclopaedic. For an examination with the breadth of NEET-PG or CMS, the following GIT topics deserve attention beyond what is covered here: colorectal carcinoma in depth (Duke's/TNM staging, Lynch syndrome, microsatellite instability, FOLFOX regimen); small bowel tumours including GIST (CD117/c-kit, imatinib); gut motility disorders beyond achalasia (diffuse oesophageal spasm, gastroparesis); nutritional support and enteral versus parenteral feeding indications; and the paediatric GIT conditions — Hirschsprung's disease (absent ganglion cells, barium enema transition zone, Swenson pull-through), intussusception (ileocaecal, red-currant jelly stool, USS doughnut sign, air enema reduction), and hypertrophic pyloric stenosis (Ramstedt pyloromyotomy, hypochloraemic metabolic alkalosis).
These topics may appear in a future Paediatric Surgery or Surgery Morning Rounds series. They are noted here so that a candidate working through this GIT series knows precisely where its boundaries lie.
Forty cases. Seven rounds. Several hundred debrief paragraphs. If you have read this far, you have covered more GIT medicine and surgery than many candidates will encounter in any single resource — and you have done it through clinical problems rather than lists.
The examination, whether NEET-PG or CMS, is not the end point. It is the credential that opens the door to the work. The district hospital, the community health centre, the general OPD — these are where the real patients present: the jaundiced young woman in her third trimester, the elderly man whose abdomen is inexplicably soft despite his agony, the child with bloody diarrhoea whose antibiotics must be withheld. The cases in these rounds were written with that practice in mind, not with the examination hall as the only horizon.
There will be questions in the actual examination that this series did not anticipate. There will be vignettes phrased in ways that feel unfamiliar. That is expected and manageable — a candidate who understands mechanisms does not need to have seen every question before. The debrief notes in these rounds were written to build that kind of understanding: not what the answer is, but why it is the answer and what the alternatives would mean clinically.
Go well. The preparation you have done here is real, and it will serve you — in the examination room, and long after.
For clinical reasoning practice, return to the seven Morning Rounds quizzes linked in the series index.