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EN4.{37-39,45} | Throat Pharynx and Oesophagus — PBL Case

CLINICAL SETTING

It is 11:30 PM in the casualty of a district hospital. Dr Meera Nair, a final-year resident on ENT call, receives two patients within 45 minutes of each other. Patient A: Rahul, a 21-year-old engineering student, is brought in by his hostel-mates. He has a 5-day history of severe sore throat, inability to open his mouth fully, and drooling. He cannot swallow even water. His friends report he was prescribed amoxicillin 3 days ago at a pharmacy and developed a widespread body rash that evening — they assumed it was an allergy and stopped the drug. On examination: temperature 39.4°C, left peritonsillar bulge, uvula deviated to the right, trismus — mouth opening 1.5 cm. Patient B: Kavitha, a 47-year-old school headmistress, is brought in by her husband. For the past 5 months she has had progressive difficulty swallowing — first with chapati and rice, now with idli and porridge. She has lost 11 kg. She is an ex-smoker (stopped 5 years ago) and has no family history of cancer. On examination she is cachectic. No neck lymphadenopathy is palpable. She is distressed and tearful — she says she assumed it was 'acidity' and delayed coming to the doctor.

Trigger 1: Diagnosis and Immediate Decisions

Rahul: Dr Nair confirms the diagnosis on examination. The house officer suggests IV amoxicillin-clavulanate for the 'throat infection.' Rahul's hostel-mate shows a photo of the rash from 3 days ago — widespread erythematous maculopapular, covering the trunk and limbs. A rapid monospot test is available in the casualty. Rahul's airway is currently stable but his SpO2 is 96% on room air and he cannot open his mouth beyond 1.5 cm. Kavitha: Dr Nair reviews Kavitha and notes she has had dysphagia only to solids initially, now to semi-solids — liquids are still tolerable. She has lost 11 kg over 5 months. She has no odynophagia, no voice change. An upper GI endoscopy is available the next morning. The casualty nurse asks if a barium swallow should be requested urgently tonight.

DISCUSSION POINTS

  • For Rahul: Name the clinical diagnosis and identify the three signs that distinguish it from uncomplicated acute tonsillitis. Why should Dr Nair NOT prescribe amoxicillin or ampicillin? What was the likely rash and its mechanism?
  • For Kavitha: Use the solid/liquid dysphagia rule to classify her dysphagia mechanistically. What is your primary working diagnosis? Should Dr Nair request barium swallow tonight or wait for morning endoscopy — and why?
  • What is the most important immediate airway concern for Rahul, and what is the threshold for emergency intervention?
  • Rahul's monospot test comes back POSITIVE. Does this change the diagnosis? What is the correct immediate management for each of his two concurrent problems (EBV mononucleosis AND peritonsillar abscess)?
Click to reveal Trigger 2: Investigation Results and Complications (discuss previous trigger first!)

Trigger 2: Investigation Results and Complications

Rahul: The surgical registrar performs needle aspiration under local anaesthesia — 4 mL of pus is drained from the left peritonsillar space. Rahul is admitted on IV fluids, analgesics, and penicillin G (appropriate given EBV monospot positive — avoiding amoxicillin class). After 48 hours, he is improving and tolerating fluids. His ENT consultant reviews him and discusses interval tonsillectomy. Rahul asks: 'Can't you just remove them now?' His medical record shows he has had 7 documented episodes of tonsillitis in the past 12 months — each with fever >38.5°C and cervical lymphadenopathy. Kavitha: Morning endoscopy reveals a friable, irregular, near-circumferential lesion at 27 cm. Biopsy is taken. The endoscopist notes the lumen is significantly narrowed. While waiting for biopsy results, the duty house officer requests CT chest alone for staging. The gastroenterologist advises that the histology is critical before staging.

DISCUSSION POINTS

  • Rahul meets Paradise criteria with 7 episodes in 12 months. Explain the Paradise criteria in full (all three thresholds). Why is tonsillectomy performed as an interval procedure after quinsy rather than immediately?
  • The house officer requests CT chest alone for Kavitha. The gastroenterologist says histology must come first. Explain why: what does endoscopy with biopsy provide that CT alone cannot, and why does staging CT only follow after histological confirmation?
  • Biopsy confirms squamous cell carcinoma. Kavitha's husband asks what caused this. Explain the risk factor profile for oesophageal SCC vs adenocarcinoma — covering location, aetiology, and how Barrett's oesophagus fits into this.
  • What additional counselling should Rahul receive about his EBV infection — specifically regarding physical activity, spleen safety, and the risk of prescribing amoxicillin class drugs if another practitioner sees him in the future?
Click to reveal Trigger 3: Complications, Communication, and the Discharge Decision (discuss previous trigger first!)

Trigger 3: Complications, Communication, and the Discharge Decision

Rahul: He is discharged 5 days after admission and booked for interval tonsillectomy in 6 weeks. On Day 8 post-admission (Day 3 post-discharge), his mother calls the ward at midnight: Rahul is at home with fresh bright-red bleeding from his mouth. She says the wound has been 'white and scabby' since discharge and she assumed this was healing. The bleeding has not stopped after 20 minutes of gentle pressure. Kavitha: Staging CT confirms the tumour is confined to the oesophageal wall without distant metastases or nodal disease (Stage IIA). The oncology multidisciplinary team recommends neoadjuvant chemoradiotherapy followed by surgery. Kavitha breaks down: 'I waited too long. If I had come earlier, would this have been caught sooner?' She asks Dr Nair if the 5 months of 'acidity' treatment she received at a local clinic delayed diagnosis. She also asks what her options are for eating in the meantime given near-total dysphagia.

DISCUSSION POINTS

  • Classify Rahul's haemorrhage — type, timing, mechanism. What is the emergency management? His mother asks if it is safe to 'wait and see' until morning. What do you tell her?
  • In retrospect, what counselling and discharge instructions should have been given to Rahul and his family to prepare them for this exact scenario? Include dietary instructions and the critical red-flag sign.
  • Kavitha asks whether the 5-month delay changed her prognosis. How does oesophageal carcinoma stage correlate with prognosis? What features would have indicated earlier referral to ENT/gastroenterology?
  • Address Kavitha's immediate nutritional problem: she cannot swallow semi-solids. What are the options for maintaining nutrition during neoadjuvant treatment (name at least two, with brief advantages and disadvantages of each)? Which would the MDT likely recommend first?

Group Task Assignments

Group 1: Tonsillitis — Diagnosis and the EBV Trap

  • Prepare a structured clinical summary of Rahul's presentation: diagnosis, three distinguishing signs, EBV complication, management plan
  • Explain the immunological mechanism of the amoxicillin-EBV rash — why does it occur, and why is it not a true penicillin allergy?
  • Draft a brief patient information card for Rahul listing: (1) EBV precautions for the next 4–6 weeks, (2) medications to avoid at any future consultation, (3) when to return to hospital

Competencies: EN4.38

Group 2: Tonsillectomy — Indications, Technique, and Complications

  • State all three Paradise criteria thresholds in full and apply them to Rahul's case
  • Classify post-tonsillectomy haemorrhage (primary, reactionary, secondary) — timing and mechanism for each
  • Describe the management of secondary haemorrhage from first call to theatre: initial assessment, IV access, resuscitation, surgical decision criteria

Competencies: EN4.39

Group 3: Dysphagia — Systematic Assessment and Differential Diagnosis

  • Construct a systematic dysphagia history framework using four key history variables (consistency, progression, weight loss, pain) and apply it to Kavitha's case
  • List six causes of mechanical dysphagia and three causes of motility dysphagia — classify each by oropharyngeal vs oesophageal level
  • Compare barium swallow vs upper GI endoscopy for oesophageal diseases — when is each preferred and why?

Competencies: EN4.37

Group 4: Oesophageal Diseases — Diagnosis and Management

  • Compare oesophageal SCC vs adenocarcinoma: anatomical location, risk factors, epidemiology, and macroscopic appearance
  • Outline the investigation sequence for suspected oesophageal carcinoma — from first-line (endoscopy + biopsy) through staging (CT, PET, EUS)
  • Summarise the management principles for oesophageal carcinoma by stage and discuss at least two management options for near-total dysphagia during treatment

Competencies: EN4.45

Group 5: Communication and Patient-Centred Care

  • Role-play the conversation in which Dr Nair explains Kavitha's diagnosis (oesophageal SCC) and the staging result to her and her husband — addressing diagnostic delay sensitively
  • Identify the warning symptoms that should have prompted earlier referral from the primary care physician (progressive solid-food dysphagia + weight loss = 2-week-wait rule equivalent in ENT)
  • Draft the discharge instructions for Rahul post-tonsillectomy — covering diet, activity, warning signs of secondary haemorrhage, and the prohibition on gargling

Competencies: EN4.37, EN4.38, EN4.39, EN4.45

Learning Issues

Research these questions and bring your findings to the discussion.

  1. [EN4.37] What is the systematic clinical framework for evaluating dysphagia — covering the solid/liquid distinction, progression, associated symptoms, and the four-level anatomical classification (oral, pharyngeal, oesophageal, gastro-oesophageal)?
  2. [EN4.37] What are the key investigations for dysphagia and what does each diagnose? When is barium swallow preferred over endoscopy, and when is manometry indicated?
  3. [EN4.38] What are the clinical features, investigations, differential diagnoses and complications of acute and chronic tonsillitis? How is peritonsillar abscess (quinsy) distinguished from uncomplicated tonsillitis — and what is its management?
  4. [EN4.38] What is the mechanism of the amoxicillin/ampicillin rash in EBV infectious mononucleosis? What is the correct management of EBV tonsillitis, and what are the indications for corticosteroids?
  5. [EN4.39] What are the Paradise criteria for tonsillectomy? What are the absolute indications beyond Paradise criteria (OSA, peritonsillar abscess, suspected malignancy)?
  6. [EN4.39] Classify post-tonsillectomy haemorrhage (primary, reactionary, secondary) by timing and mechanism. Describe the management of each type.
  7. [EN4.45] Describe the clinical features, investigations and management principles for each major oesophageal disease: oesophageal carcinoma (SCC vs adenocarcinoma), achalasia, Zenker's diverticulum, GORD and Barrett's oesophagus, and Plummer-Vinson syndrome.
  8. [EN4.45] What is the staging system for oesophageal carcinoma and how does stage correlate with management and prognosis? What are the options for palliation of dysphagia in advanced or inoperable oesophageal carcinoma?