GB Cancer

Risk Factors:
- Note: Cholesterosis (Strawberry GB) is not a risk factor for GB cancer
- Gallstones (90%)
- Salmonella typhi carrier
- Porcelain gallbladder
- GB polyps → >1 cm in size, multiple
- Risk factor for GB cancer
- If single and < 1cm → Regular follow up (?every 2 months)
- Abnormal Pancreaticobiliary Duct Junction (APBDJ):
- Increased risk of GB cancer and cholangiocarcinoma.
- Heavy metal contamination of water
- Median survival: 6 months
Clinical Features:
- Earliest sign: Non specific
- abdominal pain, bloating, and changes in appetite.
- Recurrent biliary colic
- Cannot be distinguished from GB stones
- Then: GB mass
- Jaundice (late sign)
Management:
- Investigations:
- IOC: CECT (for staging).
- PET-CT: IOC for staging.
- Median Survival
- 6 months
- Stage-Based Treatment:
Stage | Feature | Rx |
T1a | Above muscle layer | Simple cholecystectomy |
T1b | Involves muscle layer | Radical/extended cholecystectomy |
T2, T3 | - | 1. Radical cholecystectomy 2. Chemotherapy (Gemcitabine) ± radiotherapy |
T4 | Invades adjacent structures | Gemcitabine chemotherapy → [Good response] → Surgery |
- Radical Cholecystectomy (Surgical Removal):
- Structures removed:
- Gallbladder
- Liver segments 4B & 5
- Lymph nodes along hepatoduodenal ligament
- Common Bile Duct (CBD) (if involved)
- Minimum lymph nodes removed:
- Breast: 10
- Colorectal: 12
- Esophagus: 15
- Stomach: 16
- GB: 6
- Mnemonic:
- Colorectal → Appi idan → 2 → 12
- Eso → E → F → Five → 15
- Sto → S → Six → Sixteen
- Breast → 10/10 → 10


