Description
Abdominal bloating is one of the most common yet elusive complaints in clinical practice. While it is often functional and benign, it can sometimes signal serious pathology. This article presents two contrasting cases — one standard, one challenging — to sharpen your diagnostic approach.
🔍 Jump to Section
- Case 1 – Standard Case
- Case 2 – Challenging Case
- Take Home Messages
- Clinical Tips
- Glossary
- Related Articles
- References
- Recommended Resources
Case 1 – Standard Case: “Every evening my belly feels like a balloon…”
Doorway Information
- Age: 32
- Gender: Female
- Chief Complaint: “My stomach feels really bloated, especially in the evening.”
- Vital Signs: T 36.6°C, HR 72, BP 112/68, RR 14, SpO₂ 99%
Structured History
Opening
“My stomach starts to swell up by evening—it’s been happening for months.”
Shoreline
“It’s been like this for about 4 months. I feel fine in the morning, but by evening I look like I’m five months pregnant.”
Associated Symptoms
- No nausea or vomiting
- Bowel movements daily, but sluggish
- Sometimes gassy, belching after meals
Mood / Function / Appetite / Sleep
- Some anxiety around the symptoms
- Appetite normal, avoids certain foods
- No weight loss
- Normal sleep
Medical History / Medication
- Occasional PPI and laxative use
PAM HITS FOSS
- P: No surgeries
- A: No allergies
- M: No regular medications
- H: No chronic illness
- I: Freelance designer; irregular meals
- T: Regular cycles
- S: Non-smoker, occasional wine
- F: No family GI disease
- O: Lives with partner
- S: No substance use
- S: Sexually active
Concerns & Questions
“Could this be cancer? Or hormone-related?”
Physical Examination
Positive Findings
- Mild evening distension
- Normal bowel sounds
- Mild LLQ tenderness
Negative Findings
- No guarding, rigidity, rebound
- No hepatosplenomegaly or masses
Differential Diagnosis
1. Functional abdominal bloating (IBS-C subtype)
- Time-of-day variation, mild constipation, psychological overlay
2. Small intestinal bacterial overgrowth (SIBO)
- Gassy, food-related pattern, but no diarrhea or surgical history
3. Early ovarian neoplasm
- Vague concern, no masses or menstrual irregularity
Clinical Reflection
“Her exam is reassuring, but the symptoms are real. She needs validation and a structured plan.”
Clinical Pearls
- “Morning flat, evening full” = functional pattern
- Red flags always matter: bleeding, weight loss, vomiting
- Avoid dismissing patient’s concern as “just stress”
Challenging Questions
Q: “Is this cancer?”
A: “That’s one possibility, but we need more information. Several other conditions can cause this. We’ll do the right tests and support you step by step.”
Q: “Should I do a CT scan?”
A: “You don’t have alarm signs now, so let’s try symptom management first and re-evaluate if needed.”
Q: “Could it be hormone-related?”
A: “It doesn’t appear directly linked to your cycle, but we’ll watch for patterns.”
📝 SOAP Note
S: 32F with 4-month history of evening bloating. Normal bowel habits, mild constipation. No red flags. No weight loss.
O: T 36.6°C, HR 72. Abdomen soft, mildly distended. No mass or organomegaly.
A:
# Functional bloating (IBS-C)
# Rule out ovarian pathology
P:
- Diet/lifestyle education
- Consider fiber or osmotic laxative trial
- Pelvic US if symptoms persist
- Follow-up in 2–4 weeks
Case 2 – Challenging Case: “I thought I was just gaining weight…”
Doorway Information
- Age: 58
- Gender: Female
- Chief Complaint: “My abdomen is getting bigger and tighter.”
- Vital Signs: T 36.8°C, HR 84, BP 138/80, RR 16, SpO₂ 98%
Structured History
Opening
“My belly keeps growing, but I haven’t changed how I eat.”
Shoreline
“It started two months ago. My clothes no longer fit right.”
Associated Symptoms
- Early satiety
- Mild shortness of breath
- Occasional pelvic discomfort
- No bleeding, vomiting, bowel changes
Mood / Function / Appetite / Sleep
- Anxiety about cause
- Appetite decreased
- Disturbed sleep from pressure
Medical History / Medication
- Hypertension (on amlodipine)
- Menopause at 52
PAM HITS FOSS
- P: No surgeries
- A: No allergies
- M: Amlodipine only
- H: Hypertension
- I: Retired
- T: Menopausal
- S: Non-smoker
- F: Sister with breast cancer
- O: Married
- S: No substance use
- S: Not sexually active
Concerns & Questions
“Could this be something serious like cancer?”
Physical Examination
Positive Findings
- Distended abdomen with shifting dullness
- Mild lower abdominal tenderness
Negative Findings
- No palpable mass
- No hepatosplenomegaly
- No edema
Differential Diagnosis
1. Ovarian cancer with malignant ascites
- Postmenopausal status, family history, ascites
2. Liver cirrhosis with ascites
- No liver disease signs, no alcohol use
3. Peritoneal carcinomatosis from GI source
- No GI symptoms, but not excluded
Clinical Reflection
“This is no longer ‘just bloating.’ The clues point toward something serious — time for action.”
Clinical Pearls
- Ascites in postmenopausal women = ovarian cancer until proven otherwise
- CA-125 is helpful but not definitive
- Ultrasound is first step, not CT
Challenging Questions
Q: “Do you think it’s cancer?”
A: “We’re concerned and will investigate quickly. We’ll explain each step clearly and support you.”
Q: “Did I wait too long?”
A: “You came as soon as you felt something wasn’t right. That was the right decision.”
Q: “Will I need surgery?”
A: “Depending on results, yes—but we’ll review all the options together.”
📝 SOAP Note
S: 58F with progressive abdominal distension over 2 months, early satiety, decreased appetite. No bleeding or vomiting.
O: T 36.8°C, HR 84. Abdomen distended with shifting dullness. No edema.
A:
# Ascites in postmenopausal woman
# Suspicion of ovarian malignancy
P:
- Pelvic ultrasound
- Tumor markers: CA-125, CEA
- CBC, CMP
- Refer to gynecologic oncology
🧠 Take Home Messages
- Bloating is often subjective — validate the experience.
- Constipation + time-of-day variation → functional cause likely.
- “Weight gain” in older women warrants deeper evaluation.
- Don’t forget to check shifting dullness.
- Ultrasound first, not CT, in most initial workups.
💡 Clinical Tips
- “Flat in morning, full at night” = functional pattern
- Distinguish between distension and true weight change
- Always ask about menstrual and sexual history
- Early satiety is a red flag
- Red flags: age >50, weight loss, bleeding, palpable mass
📖 Medical English Glossary
Term | Definition |
---|---|
Bloating | Subjective fullness/swelling in abdomen |
Shifting dullness | Sign of ascites on physical exam |
Ascites | Free fluid in the abdominal cavity |
Early satiety | Feeling full after small amounts of food |
CA-125 | Ovarian tumor marker |
IBS | Functional bowel disorder |
Functional bloating | Non-organic bloating |
Peritoneal carcinomatosis | Widespread peritoneal cancer involvement |
🔗 Related Articles
- Approach to Abdominal Distention — Is It Really Just “Gas”?
- Abdominal Pain: A Symptom-Based Clinical Approach
- 🩺 Mock Patient Scripts
📚 References
- Gynaecologic Oncology. Diagnosis and management of ovarian cancer.
- Rome IV criteria for functional gastrointestinal disorders.
- UpToDate: Approach to the adult with abdominal bloating.
- BMJ Best Practice: Evaluation of ascites and peritoneal carcinomatosis.
- ACG IBS Guidelines (2021)
🧰 Recommended Resources
- First Aid for the USMLE Step 2 CS
- The Patient History: An Evidence-Based Approach
- Case Files: Internal Medicine
- Pocket Medicine
- Da Vinci’s Snap Diagnosis Cases (JP)