Others (In Murtagh)

Abdominal Swelling / Distension

Abdominal swelling or distension is an increase in abdominal girth caused by conditions such as ascites, organomegaly, bowel obstruction, intra-abdominal masses, or excessive gas accumulation.

Murtagh Diagnostic Strategy

6 F's of abdominal distension: Fat, Fluid (ascites), Foetus, Flatus (bowel obstruction), Faeces, Full-sized tumour (+ Full bladder) [1][3][4]
CategoryDiagnosisKey DiscriminatorCantonese Question / FindingProbability
Probability DiagnosisFunctional bloating / IBSIntermittent, related to meals, no weight loss, normal exam「食完嘢會唔會特別脹?有冇時好時壞?」~35%
Ascites secondary to liver cirrhosis (esp. HBV/alcohol in HK) [1]Chronic alcohol/HBV + shifting dullness + stigmata of CLD「你有冇乙肝或者飲酒習慣?」; shifting dullness on percussion~10%
Serious Not To MissIntra-abdominal malignancy (ovarian CA, colorectal CA, gastric CA, HCC)Progressive distension + weight loss + hard irregular mass / bloody ascites「體重有冇輕咗?大便有冇血?」; hard irregular hepatomegaly or pelvic mass~3%
Intestinal obstructionAbsolute constipation + colicky pain + vomiting + high-pitched bowel sounds「有冇完全去唔到大便同放唔到屁?有冇嘔?」; tinkling bowel sounds~2%
Ruptured ectopic pregnancy (female of reproductive age)Acute onset + missed period + haemodynamic instability「月經有冇遲咗?有冇突然好痛?」< 1%
PitfallsChronic constipation / faecal loadingElderly, opioid use, palpable faeces in LIF「幾耐去一次大便?食緊止痛藥嗎?」; palpable indentable mass LIF~20%
Ovarian cyst / tumourPelvic fullness, urinary frequency; umbilicus points upward [3]「有冇覺得下腹脹、成日想去廁所?」; suprapubic mass, can't get below it~3%
Nephrotic syndromeGeneralised oedema + frothy urine + hypoalbuminaemia「小便有冇好多泡?」; periorbital + pedal oedema~2%
TB peritonitisImmigrant/immunocompromised + fever + weight loss + exudative ascites「有冇發燒、夜晚出汗?有冇接觸過肺癆病人?」< 1%
MasqueradesHeart failure (R-sided → ascites + ankle oedema)Orthopnoea, PND, raised JVP, ankle oedema [5]「瞓低會唔會氣喘?要墊幾多個枕頭?」; elevated JVP, bilateral pitting oedema~5%
Drugs (opioids → ileus; steroids → obesity)Temporal relationship with medication「最近有冇轉藥或者加藥?」~3%
Hypothyroidism (myxoedema → ileus)Cold intolerance, weight gain, constipation「有冇怕凍、成日攰、便秘?」~2%
Trying to Tell Me Something?Fear of cancer; family member recently diagnosed with cancer; depression; domestic stressPatient anxious, vague complaints, frequent visits「你最擔心係咩?屋企最近有冇咩事發生?」~10%

6-Minute Consultation Structure

TimeTaskCantonese Key PhrasesWhy It Scores Marks
0:00–0:30Greeting, rapport, set agenda「你好,我係X醫生,今日想同你傾下你嘅情況。可唔可以叫你做X先生/小姐?今日嚟睇醫生最主要想解決咩問題呀?」Friendly opening + patient-centred; marks for interpersonal skills
0:30–1:30HPI – symptom analysis「個肚幾時開始脹㗎?係慢慢脹大定突然間脹嘅?有冇越嚟越嚴重?有冇肚痛、嘔、去唔到大便?體重有冇變?」Core history; establishes timeline, severity, associated symptoms
1:30–2:30Red flags + systems review「有冇發燒?有冇痾血或者便便變黑色?有冇皮膚或者眼白變黃?食嘢有冇冇胃口或者食少少就飽?腳有冇腫?有冇氣喘?」Red flags for malignancy, GI bleed, liver failure, heart failure, obstruction
2:30–3:15PMH, drugs, allergy, FHx, social hx「之前有冇乜嘢長期病?有冇食緊乜嘢藥?有冇藥物敏感?屋企人有冇肝病或者癌症?你平時飲唔飲酒?飲幾多?食唔食煙?」Alcohol/hepatitis B are #1 causes of cirrhosis in HK; drug hx critical
3:15–4:00ICE – Ideas, Concerns, Expectations「你自己覺得個肚脹係咩原因呢?(Ideas) 你最擔心啲咩嘢?(Concerns) 你今日最希望醫生可以幫到你啲咩?(Expectations)」Direct marks for ICE; uncovers hidden agenda
4:00–4:45Uncover hidden agenda / functional impact「呢個問題有冇影響到你返工或者瞓覺?有冇影響到你嘅心情?屋企人有冇擔心?有冇其他嘢你想同我講嘅?」"Why today?" may reveal fear of cancer, family pressure, functional decline
4:45–5:30Signpost → brief targeted exam mention + summarise「咁我總結下:你個肚脹咗X個星期,仲有XX。我想幫你檢查下個肚,特別想聽下、篤下。」Summarising scores interpersonal marks; shows you listened
5:30–6:00Empathy, safety-net, close「我明白你好擔心,我哋會幫你搵清楚原因。如果有咩突然肚痛好犀利、嘔血或者個肚越嚟越脹,記住即刻去急症室。」Safety-net = must-have for FM; empathy line scores

Uncovering the Hidden Agenda

Ask 「點解揀今日嚟呀?」 (Why did you come today specifically?) — often the patient came because a relative noticed the swelling, or they fear cancer / liver disease. This is frequently the ONE main reason for consultation, not just "abdominal swelling."


DomainEnglish QuestionCantonese QuestionWhy It MattersIf Positive, Think Of
Onset / DurationWhen did you first notice the swelling? Gradual or sudden?「幾時開始發覺個肚脹㗎?慢慢脹定突然間脹?」Acute → obstruction, bleed; chronic → cirrhosis, malignancyAcute: obstruction. Weeks–months: ascites, tumour
ProgressionIs it getting bigger?「有冇越嚟越大?」Progressive = serious pathologyCirrhosis (decompensating), ovarian mass, malignancy
Associated painAny abdominal pain? Where?「有冇肚痛?邊度痛?」Pain localisation narrows DDxDiffuse + distension → obstruction/peritonitis; RUQ → liver
Bowel habitAny change in bowel habits? Constipation? Blood/mucus?「大便有冇唔同咗?有冇便秘?有冇血或者黐液?」Obstruction, colorectal CAAlternating habit + blood → colorectal CA; absolute constipation → obstruction
VomitingAny vomiting? What colour?「有冇嘔?嘔出嚟咩色?」Bilious → distal obstruction; feculent → late obstructionHigh obstruction: early vomiting. Low: late/feculent
Weight loss / appetiteAny weight loss? Appetite change?「體重有冇輕咗?食嘢有冇胃口?」Constitutional → malignancy, TB, cirrhosisCancer, TB peritonitis, decompensated CLD
JaundiceHave your eyes/skin turned yellow?「眼白或者皮膚有冇變黃?」Liver disease, biliary obstructionCirrhosis, pancreatic head CA, hepatitis
Ankle swelling / SOBAny leg swelling or breathlessness?「腳有冇腫?有冇氣喘或者瞓低氣喘?」R heart failure → hepatic congestion + ascites; nephroticCHF, nephrotic syndrome, cirrhosis
Alcohol historyDo you drink? How much per week? For how long?「你飲唔飲酒㗎?一個禮拜飲幾多?飲咗幾多年?」Alcohol is a major cause of cirrhosis in HK [1]Alcoholic liver disease / cirrhosis
Hepatitis B/CHave you been tested for Hep B? Are you a carrier?「你有冇驗過乙型肝炎?你係唔係帶菌者?」HBV is the #1 cause of cirrhosis/HCC in HK [1]Chronic HBV → cirrhosis → ascites/HCC
Drug historyAny medications? NSAIDs? TCM?「有冇食緊咩藥?有冇食止痛藥或者中藥?」Hepatotoxic drugs, NSAIDs → GI bleedDrug-induced liver injury
Gynae/menstrual (if female)When was your last period? Could you be pregnant?「你最後一次月經幾時?有冇可能懷孕?」Pregnancy, ovarian cyst/tumour, fibroidFoetus, ovarian mass, uterine fibroid [2]
Family historyAny family history of liver disease or cancer?「屋企人有冇肝病或者癌症?」HBV vertical transmission, familial CRCHBV carrier family, Lynch syndrome
Functional impactDoes this affect your work/daily life/sleep?「有冇影響到你返工、日常生活或者瞓覺?」Scores biopsychosocial marksSocial/functional problem for CRF
MoodHow is your mood? Any worries?「你心情點呀?有冇擔心或者唔開心?」Depression, anxiety re diagnosisPsychological problem for CRF

Case Report Form Answer Builder

  • CC format: "Abdominal swelling/distension for [duration]"
  • HPI must capture: onset (acute vs gradual), progression, associated symptoms (pain, vomiting, change in bowel habit, weight loss, jaundice, ankle swelling, SOB), aggravating/relieving factors
  • Include relevant background: alcohol intake, HBV status, drug history, menstrual/obstetric history if female

Examples:

  • "Patient noticed progressively enlarging abdomen over 2 months and is worried about liver disease"
  • "Wife noticed the swelling and urged patient to seek medical attention" ← hidden agenda
  • "Patient concerned about cancer because a relative was recently diagnosed"
  • Phrase as the patient's own reason, not a medical diagnosis

Likely ExamplesExact Wording for CRF
Ideas"I think it might be fluid / my liver / cancer""Patient thinks the swelling may be due to liver problems / water retention"
Concerns"I'm worried it could be cancer" / "worried about ability to work""Patient is worried the swelling might be cancer / worried about impact on livelihood"
Expectations"I want a scan" / "I want to know if it's serious""Patient hopes for an ultrasound to find out the cause / wants reassurance"

  • In a middle-aged/elderly HK male with alcohol or HBV history → Ascites secondary to liver cirrhosis [1]
  • Minimum supporting evidence: gradual distension + shifting dullness + risk factor (HBV carrier / alcohol) ± stigmata of CLD (spider naevi, palmar erythema, jaundice)
  • In a female → consider ovarian mass / pregnancy depending on age and context

DDxKey Discriminator
1. Intra-abdominal malignancy (e.g. ovarian CA, colorectal CA with peritoneal carcinomatosis)Weight loss + hard mass + bloody/exudative ascites (SAAG < 1.1)
2. Congestive heart failure (R-sided)Orthopnoea, PND, elevated JVP, bilateral ankle oedema
3. Intestinal obstructionColicky pain + absolute constipation + vomiting + tinkling bowel sounds

DomainProblem
BiologicalUnderlying liver cirrhosis with risk of decompensation (variceal bleed, SBP, HE)
PsychologicalAnxiety / fear of cancer diagnosis; low mood due to chronic illness and uncertainty
SocialFunctional impairment affecting work / ADLs; financial burden; if alcoholic → need for social support for abstinence

Diagnosis / DDxBest Supporting Physical SignHow to ElicitWhy It Supports This Diagnosis
Ascites (cirrhosis) [1]Shifting dullnessPatient supine → percuss from umbilicus laterally until dull → mark → turn patient to opposite side → re-percuss; dull → resonant = positiveDemonstrates free intra-peritoneal fluid; most reliable bedside sign for ascites [1][3]
Ascites (cirrhosis) – additionalFluid thrillAssistant places edge of hand on midline; flick one flank, feel impulse on otherConfirms large-volume ascites ( > 1L)
Intra-abdominal malignancyHard, irregular hepatomegaly or palpable pelvic massPalpate RUQ on inspiration; bimanual pelvic palpationHard craggy liver edge → HCC/mets; fixed pelvic mass → ovarian CA
Congestive heart failureElevated JVP with hepatojugular reflux45° head-up; compress liver for 15 s → sustained JVP rise ≥ 3 cmProves R heart pressure overload causing hepatic congestion and ascites [5]
Intestinal obstructionHigh-pitched tinkling bowel soundsAuscultate near umbilicus for ≥ 2 minHyperactive, tinkling quality pathognomonic of mechanical obstruction [3]
Ovarian massSuprapubic mass – cannot get below it; umbilicus points upward [3]Palpate suprapubic area; note relationship to pubic symphysisPelvic origin mass rises out of pelvis; dull to percussion; distinct from ascites

Exam Discriminators and Traps

Top Traps That Lose Marks

  1. Forgetting to ask about HBV status – Hong Kong-specific; HBV is the #1 cause of cirrhosis/HCC here [1].
  2. Not asking about pregnancy in any female of reproductive age — Foetus is one of the 6 F's [3][4].
  3. Confusing ascites with ovarian cyst — Ascites: flanks bulge, umbilicus horizontal/everted, shifting dullness positive. Ovarian cyst: suprapubic mass, umbilicus points upward, NO shifting dullness [3].
  4. Writing the diagnosis as the "main reason for consultation" — RFC should be in the patient's own words/perspective, not a medical label.
  5. Omitting ICE entirely — these are separately marked; must elicit all three.
  6. Not safety-netting — always give red-flag advice at the end of the consultation.

Red FlagConcernAction
Rapid-onset tense ascites + fever + abdominal tendernessSBP or perforationSame-day A&E referral
Haematemesis / melaenaVariceal bleed / UGIBEmergency A&E
New-onset jaundice + confusionDecompensated liver failure / HEUrgent admission
Absolute constipation + vomiting + distensionIntestinal obstructionSurgical emergency referral
Acute severe abdominal pain + haemodynamic instability (female)Ruptured ectopic pregnancyEmergency resuscitation + referral
Progressive weight loss + hard massMalignancyUrgent outpatient referral for imaging + biopsy

「如果個肚突然好痛、嘔血、大便變黑色、或者發燒唔退,要即刻去急症室。我哋會安排驗血同照超聲波幫你搵原因。」


High Yield Summary

What to ASK: HBV status, alcohol, onset/progression of swelling, weight loss, bowel habit, jaundice, ankle oedema, SOB, menstrual/pregnancy history (females), ICE, and "Why today?"

What to WRITE on CRF: CC with duration → HPI chronologically → RFC in patient's words → ICE separately → Most likely Dx with evidence → 3 DDx with discriminators → 3 biopsychosocial problems → Physical sign = shifting dullness for ascites

What NOT to MISS: HBV, pregnancy, intestinal obstruction, malignancy. Safety-net red flags. ICE must be explicitly elicited and documented.

6 F's of abdominal distension: Fat, Fluid, Foetus, Flatus, Faeces, Full-sized tumours [1][3][4] — this is the core framework examiners expect.


Active Recall - Family Medicine Clinical Test

[1] Lecture slides: GC 026. Abdominal distension_ascites and cirrhosis.pdf; Senior notes: Block A - Abdominal distension_ ascites and cirrhosis.pdf [2] Lecture slides: GC 118. Pelvic mass ovarian cancer and cysts; uterine fibroid; pelvic imaging.pdf; Block C - Pelvic mass_ ovarian cancer and cysts; uterine fibroid; pelvic imaging.pdf [3] Lecture slides: CFB (MED07) Examination of the Abdomen.pdf; abdominal exam (MBBS IV) (student version).pdf; Clinical Demonstration_Abdomen.pdf; Senior notes: Ryan Ho Fundamentals.pdf (p.68); Ryan Ho GI.pdf (p.16, p.28) [4] Senior notes: Maksim Surgery Notes.pdf (p.44 — Ascites causes, 5F's/6F's) [5] Senior notes: Ryan Ho Fundamentals.pdf (p.216 — Heart failure S/S); MBBS Final MB (Medicine) (Felix PY Lai).pdf (p.540); Maksim Medicine Notes.pdf (p.137)

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