Oesophageal Disorders
Surgery · GI Surgery · lean revision notes
Oesophageal Disorders
A high-yield surgical GI cluster spanning motility disorders, malignancy, reflux surgery, and oesophageal emergencies. NEET PG loves these as clinical vignettes (dysphagia patterns, "bird-beak", "corkscrew") and as principles (Heller's myotomy, Nissen, Boerhaave). Master the dysphagia algorithm and you crack most stems.
Surgical anatomy you must know
The oesophagus is a ~25 cm muscular tube (incisors to cardia ≈ 40 cm) with no serosa — a key reason for high anastomotic leak rates and rapid transmural tumour spread. Three constrictions: cricopharyngeus (15 cm, narrowest, commonest site of foreign-body impaction & instrumental perforation), aortic/bronchial (25 cm), and diaphragmatic hiatus (40 cm).
- Upper 1/3 — striated muscle; middle 1/3 — mixed; lower 1/3 — smooth muscle.
- Blood supply is segmental (inferior thyroid, bronchial/aortic branches, left gastric/inferior phrenic) → watershed vulnerability.
- Lymphatics run longitudinally in the submucosa → skip metastases and wide submucosal spread; this dictates wide resection margins.
- Lower oesophageal sphincter (LOS) is a physiological, not anatomical, sphincter.
High-yield: Absence of a serosal layer + longitudinal submucosal lymphatics explain both the poor prognosis of carcinoma and the leak-prone anastomoses after oesophagectomy.
The dysphagia approach (master flow)
Dysphagia for solids only → progressive → mechanical obstruction (carcinoma, stricture) vs dysphagia for solids and liquids from the start → motility disorder (achalasia, scleroderma, spasm).
Stepwise workup: History (pattern) → Upper GI endoscopy (first test, rules out cancer & takes biopsy) → Barium swallow (defines anatomy/motility) → Manometry (gold standard for motility) → CT/EUS/PET (stage if malignant).
High-yield: Any new dysphagia in an adult > 40 years is carcinoma until proven otherwise — endoscopy + biopsy first, always.
1. Achalasia Cardia
Definition & pathophysiology
Primary oesophageal motility disorder = failure of LOS relaxation + loss of peristalsis in the body. Caused by degeneration of inhibitory (nitrergic/VIP) neurons in the myenteric (Auerbach's) plexus → unopposed cholinergic tone → hypertensive, non-relaxing LOS.
Secondary achalasia (pseudoachalasia): carcinoma of cardia, Chagas disease (Trypanosoma cruzi), amyloidosis. Suspect pseudoachalasia in elderly, short history (< 6 months), marked weight loss.
Clinical features
- Dysphagia to solids AND liquids from onset (hallmark).
- Regurgitation of undigested food, nocturnal cough/aspiration.
- Retrosternal discomfort; weight loss usually mild.
- Long-standing achalasia → 15–20× increased risk of squamous cell carcinoma (mid-oesophagus).
Investigations
| Test | Classic finding |
|---|---|
| Barium swallow | "Bird-beak" / "rat-tail" smooth tapering at LOS; dilated body; air-fluid level; absent gastric air bubble |
| Endoscopy | Mandatory to exclude malignancy; "pop" as scope crosses tight LOS |
| Manometry (GOLD STANDARD) | ↑ LOS resting pressure, incomplete LOS relaxation, aperistalsis of body |
| Chest X-ray | Widened mediastinum, air-fluid level, absent gastric bubble |
Chicago classification (manometry) types: Type I (classic, no pressurisation), Type II (pan-oesophageal pressurisation — best response to therapy), Type III (spastic — worst response, may need long myotomy/POEM).
High-yield: Manometry is the gold standard; barium gives the bird-beak; endoscopy is done first to exclude cancer. Achalasia shows integrated relaxation pressure (IRP) > 15 mmHg with 100 % failed peristalsis on high-resolution manometry.
Management
Definitive = mechanical disruption of LOS.
- Pneumatic balloon dilatation — first-line non-surgical; risk of perforation (~2–5 %).
- Laparoscopic Heller's cardiomyotomy — surgical standard; anterior myotomy of distal oesophagus + 2–3 cm onto stomach. Always combined with a partial (Dor anterior or Toupet posterior) fundoplication to prevent reflux.
- POEM (Per-Oral Endoscopic Myotomy) — endoscopic; procedure of choice for Type III spastic achalasia (allows longer myotomy); downside is high post-op GERD.
- Botulinum toxin injection — for elderly/unfit patients; temporary (6–12 months).
- CCBs/nitrates — poor, temporary relief.
High-yield: Heller's myotomy is paired with a partial fundoplication (not full Nissen) — a full wrap on an aperistaltic oesophagus causes severe dysphagia.
2. Diffuse Oesophageal Spasm (DES) & Nutcracker
- DES: simultaneous, repetitive, non-peristaltic contractions → intermittent chest pain (mimics angina) + dysphagia.
- Barium: "corkscrew" / "rosary bead" oesophagus.
- Manometry: simultaneous contractions, normal LOS relaxation.
- Nutcracker (jackhammer) oesophagus: very high-amplitude (> 180–220 mmHg) peristaltic contractions, painful.
- Treatment: CCBs, nitrates, anti-spasmodics; long myotomy/POEM if refractory.
3. Gastro-Oesophageal Reflux Disease (GERD) & Antireflux Surgery
Pathophysiology
Failure of the antireflux barrier — transient LOS relaxations, hypotensive LOS, hiatus hernia, delayed clearance. Acid/bile refluxes → oesophagitis.
Clinical & complications
Heartburn, regurgitation, water brash; extra-oesophageal — chronic cough, laryngitis, asthma, dental erosion. Complications: erosive oesophagitis → peptic stricture → Barrett's oesophagus → adenocarcinoma.
Los Angeles (LA) classification of erosive oesophagitis (Grade A → D by mucosal break size/extent).
Barrett's oesophagus
Metaplasia of distal squamous → specialised intestinal columnar epithelium with goblet cells. Premalignant for adenocarcinoma. Salmon-pink mucosa on endoscopy; biopsy confirms.
| Barrett's finding | Action |
|---|---|
| No dysplasia | Surveillance endoscopy 3–5 yearly + PPI |
| Low-grade dysplasia | Endoscopic surveillance 6–12 monthly / RFA |
| High-grade dysplasia | Endoscopic resection (EMR) + radiofrequency ablation; consider oesophagectomy |
High-yield: Barrett's → adenocarcinoma (intestinal metaplasia with goblet cells is the defining feature). PPIs reduce symptoms but do not reliably regress metaplasia.
Diagnosis of GERD
- Upper GI endoscopy — first-line; assess oesophagitis/Barrett's.
- 24-hour ambulatory pH monitoring — GOLD STANDARD for diagnosis (DeMeester score > 14.7 abnormal).
- Manometry — before surgery, to exclude achalasia/scleroderma and assess peristalsis (so as not to do a full wrap on a dysmotile oesophagus).
Surgery (indications)
Failed medical therapy, patient preference (young, lifelong PPI), volume regurgitation, large hiatus hernia, complications.
Nissen fundoplication = 360° (full) wrap of gastric fundus around lower oesophagus, laparoscopic, + crural repair. Partial wraps: Toupet (270° posterior), Dor (180–200° anterior) — used when peristalsis is impaired.
High-yield: "Gas-bloat syndrome" and inability to belch/vomit are classic complications of a tight Nissen (360°) wrap. A too-tight wrap → dysphagia.
4. Oesophageal Carcinoma
Two main types — the classic comparison
| Feature | Squamous cell carcinoma | Adenocarcinoma |
|---|---|---|
| Common site | Upper & middle 1/3 | Lower 1/3 / GO junction |
| Global trend | Declining | Rising (esp. West) |
| Key risk factors | Smoking, alcohol (synergistic), hot beverages, achalasia, Plummer-Vinson, lye stricture, tylosis, nitrosamines, HPV | GERD → Barrett's, obesity, male sex, smoking |
| Precursor | Dysplasia | Barrett's metaplasia |
| Indian/Asian belt | More common | Less common |
Other associations: Tylosis (palmoplantar keratoderma, autosomal dominant — RHBDF2 gene) and Plummer-Vinson/Paterson-Kelly syndrome (post-cricoid web + iron-deficiency anaemia + dysphagia → SCC).
Clinical features
- Progressive dysphagia (solids → liquids) + weight loss = classic.
- Odynophagia, hoarseness (recurrent laryngeal nerve), cough on swallowing (tracheo-oesophageal fistula), haematemesis.
- Supraclavicular (Virchow's) node.
Spread
Direct (no serosa → early local invasion), submucosal longitudinal lymphatic (skip lesions), haematogenous (liver, lung), transcoelomic.
Investigations & staging
Flow: Endoscopy + biopsy (diagnosis) → CT chest/abdomen (M-stage) → EUS (T & N stage — most accurate for local depth/nodes) → PET-CT (occult mets) → laparoscopy (for GOJ tumours, peritoneal disease) → bronchoscopy (upper tumours).
| Modality | Best for |
|---|---|
| Endoscopy + biopsy | Tissue diagnosis |
| EUS | T stage (depth) & regional N stage |
| CT thorax/abdomen | Distant metastasis, resectability |
| PET-CT | Occult distant disease, response assessment |
| Staging laparoscopy | Peritoneal/occult mets in GOJ tumours |
High-yield: EUS is the most accurate for local T and N staging; CT/PET for distant metastasis. Tumour depth (T) is best assessed by EUS, not CT.
Management
- Early/superficial (T1a, mucosal): Endoscopic mucosal resection (EMR) / ESD.
- Resectable (T1b–T3, N0–N+): Neoadjuvant chemoradiotherapy (CROSS regimen) → oesophagectomy. SCC of upper third often treated with definitive chemoradiation (surgery morbid here).
- Oesophagectomy approaches: Transhiatal (Orringer) — no thoracotomy, cervical anastomosis; Transthoracic Ivor-Lewis (laparotomy + right thoracotomy, intrathoracic anastomosis); McKeown (3-stage) for upper tumours. Stomach is the usual conduit.
- Palliation (most present late): self-expanding metal stent (SEMS) for dysphagia, chemo/radio, laser.
High-yield: CROSS trial established neoadjuvant chemoradiotherapy before surgery for resectable oesophageal cancer. Most patients present in advanced stage → overall 5-year survival remains poor.
5. Boerhaave Syndrome (spontaneous oesophageal rupture)
Definition
Spontaneous, full-thickness, transmural rupture of the oesophagus from a sudden rise in intraluminal pressure against a closed glottis — classically after forceful vomiting (alcoholic binge, bulimia).
Site: left posterolateral wall of the lower third, just above the GO junction. (Distinguish from Mallory-Weiss = mucosal tear only → haematemesis; Boerhaave = full thickness → mediastinitis.)
Mackler's triad
Vomiting + lower chest/epigastric pain + subcutaneous emphysema. (Often incomplete in practice.) Hamman's sign — mediastinal "crunch" synchronous with heartbeat.
Diagnosis
- CXR: left pleural effusion/hydropneumothorax, pneumomediastinum, subcutaneous emphysema.
- Water-soluble contrast (Gastrografin) swallow = investigation of choice to confirm leak (avoid barium — causes mediastinitis; if Gastrografin negative but suspicion high, follow with dilute barium).
- CT thorax — increasingly first-line: extraluminal air/contrast, fluid collections.
- Pleural fluid: high amylase, low pH, food particles.
Management
- Resuscitate, NBM, broad-spectrum antibiotics + antifungals, IV PPI, NG decompression.
- Early surgical primary repair (within 24 h) + drainage is treatment of choice for free perforation → best outcome.
- Late/contained: endoscopic stenting, drainage, +/- diversion; oesophagectomy for extensive necrosis.
High-yield: Time is everything — primary repair within 24 hours dramatically improves survival; delay → mediastinitis, sepsis, high mortality. Boerhaave = full-thickness; Mallory-Weiss = mucosal only.
6. Pharyngeal Pouch (Zenker's Diverticulum)
Definition
A pulsion, FALSE (mucosal) diverticulum herniating posteriorly through Killian's dehiscence — the weak triangle between the oblique fibres of thyropharyngeus and the transverse cricopharyngeus (the two parts of the inferior constrictor). Caused by cricopharyngeal incoordination/spasm.
High-yield: Zenker's is a pulsion, false diverticulum at Killian's dehiscence; it is a cause of oropharyngeal (transfer) dysphagia in the elderly.
Clinical features
- Elderly patient; regurgitation of undigested food (hours later), halitosis, gurgling neck swelling (Boyce's sign — gurgling on neck palpation), recurrent aspiration, dysphagia, weight loss.
- Chronic pouch → rare squamous cell carcinoma within it.
Diagnosis & management
- Barium swallow = investigation of choice (endoscopy risky → perforation of pouch).
- Treatment: Cricopharyngeal myotomy + diverticulectomy (open) OR endoscopic stapling (Dohlman's procedure) for the dividing wall. Myotomy of cricopharyngeus is the key step.
(Contrast: Traction diverticulum = true diverticulum, mid-oesophagus, from mediastinal nodal traction — usually asymptomatic; Epiphrenic diverticulum = pulsion, distal, associated with motility disorders.)
Mnemonics & named facts
- "ABCDEF" risk for oesophageal SCC: Alcohol, Barbecued/hot, Cigarettes, Diet (nitrosamines), Esophagitis/Erosion (lye/achalasia), Familial (tylosis).
- Bird-beak = achalasia; Corkscrew = diffuse spasm; Salmon-pink = Barrett's.
- Mackler's triad (Boerhaave), Killian's dehiscence (Zenker), Virchow's node (gastric/oesophageal CA).
- CROSS = neoadjuvant chemoradiotherapy; Heller = myotomy + partial wrap; Nissen = 360° wrap.
Key differentials of dysphagia
| Pattern | Likely cause |
|---|---|
| Solids + liquids from start, young/middle-aged, bird-beak | Achalasia |
| Solids only, progressive, > 40 y, weight loss | Carcinoma / peptic stricture |
| Intermittent + chest pain, corkscrew | Diffuse oesophageal spasm |
| Elderly, regurgitation of old food, neck swelling | Zenker's diverticulum |
| Dysphagia + Raynaud's + skin changes | Scleroderma (systemic sclerosis) |
| Post-cricoid web + IDA + female | Plummer-Vinson |
Recently asked / exam angle
- Bird-beak appearance & manometry as gold standard for achalasia — recurrent single-best-answer.
- Heller's myotomy combined with partial (Dor/Toupet) fundoplication — why not full wrap.
- EUS = best for T/N staging of oesophageal carcinoma vs CT for distant mets.
- Barrett's oesophagus → adenocarcinoma; intestinal metaplasia with goblet cells.
- Boerhaave vignette: alcoholic, vomiting, left hydropneumothorax, subcutaneous emphysema → Gastrografin swallow → early repair.
- Killian's dehiscence as the site of Zenker's diverticulum (anatomy-clinical link).
- Investigation of choice mismatches: Gastrografin (Boerhaave), barium swallow (Zenker, achalasia anatomy), 24-h pH (GERD), endoscopy first in any new dysphagia.
- POEM for Type III achalasia; CROSS regimen for resectable cancer.
- Mallory-Weiss vs Boerhaave (mucosal vs full-thickness) — paired comparison stem.
Rapid revision
- New dysphagia in an adult > 40 y = endoscopy + biopsy first (rule out cancer).
- Solids + liquids from onset → motility disorder; solids only progressive → mechanical.
- Achalasia: loss of myenteric inhibitory neurons; bird-beak; manometry gold standard; Heller's + partial wrap.
- Type II achalasia responds best to treatment; Type III → POEM.
- Long-standing achalasia → squamous cancer risk.
- DES = corkscrew oesophagus; chest pain mimicking angina.
- GERD diagnosis: endoscopy first, 24-h pH = gold standard; surgery = Nissen 360°, partial wrap if dysmotile.
- Gas-bloat + inability to belch = post-Nissen.
- Barrett's = intestinal metaplasia, goblet cells → adenocarcinoma; high-grade dysplasia → EMR + RFA.
- SCC = upper/mid third (smoking, alcohol, Plummer-Vinson, tylosis); adeno = lower third (Barrett's, GERD, obesity).
- EUS best for T/N; CROSS = neoadjuvant chemoradiotherapy before oesophagectomy (Ivor-Lewis / transhiatal Orringer).
- Boerhaave = full-thickness left lower posterolateral rupture, Mackler's triad, Gastrografin swallow, early primary repair < 24 h; Mallory-Weiss = mucosal only.
- Zenker's = false pulsion pouch at Killian's dehiscence; barium swallow (not blind endoscopy); cricopharyngeal myotomy + diverticulectomy/Dohlman.