Workup
Laboratory Studies
- Laboratory studies are generally not very nonspecific for gallbladder cancer.
- In the later stages, liver function enzyme levels may be slightly elevated. These levels are generally not elevated in stages I and II.
- An elevated bilirubin or alkaline phosphate level generally indicates advanced or obstructive disease.
- Elevated carbohydrate antigen 19-9 (CA19-9) is 79.4% sensitive and 79.5% specific for gallbladder cancer. Elevated carcinoembryonic antigen (CEA) is also associated with gallbladder cancer and is 93% specific and 50% sensitive.
Imaging Studies
- Ultrasonography is a very useful tool in the workup of gallbladder cancer.
- Polypoid lesions need to be at least 5 mm in size to be detected by ultrasonography. Cholesterol polyps generally appear as pedunculated lesions attached to the gallbladder wall.
- Ultrasonographic findings that indicate possible malignancy or the need for further workup are a thick gallbladder wall, vascular polyp, a mass projecting into the lumen or invading the wall, multiple masses or a fixed mass in the gallbladder, a porcelain gallbladder, and an extracholecystic mass. Invasion of the liver can also be seen on ultrasonograms. (See image below and Image 3.)
Sagittal ultrasonogram in a 71-year-old woman. This image demonstrates heterogeneous thickening of the gallbladder wall (arrows). The diagnosis was primary papillary adenocarcinoma of the gallbladder.
- Displacement of a stone to one side of the gallbladder is also suggestive of possible malignancy.
- Computed tomography (CT) scanning and magnetic resonance imaging (MRI) are useful in evaluating the extent of invasion and resectability of gall bladder tumors.
- CT scan results suggestive of gallbladder cancer include asymmetrical wall thickening or gallbladder mass with or without invasion into the liver.
- CT scanning of the chest, abdomen, and pelvis is a common staging modality that can determine the presence of distant metastases and give reliable information about involvement of other organs and vascular structures.
- A porcelain gallbladder has been commonly associated with gallbladder cancer; however, studies have shown that the type of calcification is more important in determining the risk for malignancy. Selective mucosal calcifications have an increased risk when compared to diffuse intramural wall calcification. (See image below and Images 4, 5.)
- Positron emission tomography (PET) scanning has a sensitivity of 75% and a specificity of 88% in gallbladder cancer but is not used routinely in the preoperative staging or postoperative surveillance of the disease.
A transaxial enhanced computed tomography (CT) scan of a 60-year-old man with right upper quadrant pain shows a partially calcified gallbladder (arrow). At laparotomy and histology, an infiltrating adenocarcinoma of the gallbladder was confirmed.
Computed tomography (CT) scan in a 65-year-old man. This image depicts squamous cell carcinoma of the gallbladder and invasion of the liver.
Diagnostic Procedures
- Percutaneous CT scan – guided biopsy is avoided in patients considered resectable based on preoperative imaging. Because of the substantial risk of peritoneal seeding, percutaneous biopsy and diagnostic cholecystectomy are not necessary in the patient suspected of having gallbladder cancer. In these patients, exploration with curative intent is planned based on preoperative imaging alone.
- Percutaneous CT scan – guided biopsy is a useful diagnostic tool in patients who appear to have a nonresectable tumor. Tissue diagnosis is necessary for palliative treatment.
- Endoscopic ultrasonography with fine-needle aspiration can be used to evaluate for peripancreatic and periportal lymphadenopathy.
Histologic Findings
The vast majority of gallbladder cancers are adenocarcinomas. Papillary adenocarcinomas have a better prognosis, because they tend to be well-differentiated and less invasive. A number of other histologic subtypes have been described, but the prognostic implications are unknown. Some authors have described metaplastic and nonmetaplastic subtypes and have suggested that metaplastic tumors have a more favorable prognosis. Unfortunately, most gallbladder cancers are poorly differentiated and present at an advanced stage, limiting the prognostic importance of histologic subtypes.
Staging
The American Joint Committee on Cancer (AJCC) has designated staging by the TNM (primary t umor, regional lymph n odes, distant m etastasis) classification as follows10 :
TNM Definitions
Primary tumor (T)
- TX - Primary tumor cannot be assessed
- T0 - No evidence of primary tumor
- Tis - Carcinoma in situ
- T1 - Tumor invades lamina propria or muscle layer
- T1a - Tumor invades lamina propria
- T1b - Tumor invades the muscle layer
- T2 - Tumor invades the perimuscular connective tissue; no extension beyond the serosa or into the liver
- T3 - Tumor perforates the serosa (visceral peritoneum) and/or directly invades the liver and/or 1 other adjacent organ or structure, such as the stomach, duodenum, colon, pancreas, omentum, or extrahepatic bile ducts
- T4 - Tumor invades the main portal vein or hepatic artery or invades multiple extrahepatic organs or structures
Regional lymph nodes (N)
- NX - Regional lymph nodes cannot be assessed
- N0 - No regional lymph node metastasis
- N1 - Regional lymph node metastasis
Distant metastasis (M)
- MX - Distant metastasis cannot be assessed
- M0 - No distant metastasis
- M1 - Distant metastasis
Stage 0
- Tis, N0, M0
Stage IA
- T1, N0, M0
Stage IB
- T2, N0, M0
Stage IIA
- T3, N0, M0
Stage IIB
- T1, N1, M0
- T2, N1, M0
- T3, N1, M0
Stage III
- T4, any N, M0
Stage IV
- Any T, any N, M1
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References
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Further Reading
Related eMedicine topics:
Adenomyomatosis
Cholecystitis [Gastroenterology]
Cholecystitis [Pediatrics: General Medicine]
Cholecystitis and Biliary Colic
Cholelithiasis [Emergency Medicine]
Cholelithiasis [Gastroenterology]
Cholelithiasis [Pediatrics: General Medicine]
Cholelithiasis [Radiology]
Gallbladder Cancer
Gallbladder, Carcinoma
Porcelain Gallbladder
Clinical guidelines:
Staging laparoscopy for biliary tract tumors. In: Diagnostic laparoscopy guidelines. Society of American Gastrointestinal and Endoscopic Surgeons - Medical Specialty Society. 1998 Apr (revised 2007 Nov). 4 pages. NGC:006836
The role of gemcitabine in the treatment of cholangiocarcinoma and gallbladder cancer. Program in Evidence-based Care - State/Local Government Agency [Non-U.S.]. 2005 Apr 26. 16 pages. NGC:005225
Clinical trials:
Capecitabine, Gemcitabine, and Radiation Therapy in Treating Patients With Cholangiocarcinoma of the Gallbladder or Bile Duct
Effect of Palliative Biliary Stenting on the Quality of Life (QOL) of Patients With Unresectable Carcinoma Gallbladder With Hiliar Block.
Gemcitabine, Oxaliplatin in Combination With Bevacizumab in Biliary Tract and Gallbladder Cancer.
Trastuzumab in Treating Patients With Locally Advanced or Metastatic Gallbladder Cancer or Bile Duct Cancer That Cannot Be Removed by Surgery
Keywords
gallbladder tumors, gallbladder, gall bladder, gallstones, adenocarcinoma, adenoma, gallstone, cholecystectomy, gallbladder surgery, adenomas, gallbladder disease, tubular adenoma, adenomatous, gallbladder problems, cholelithiasis, biliary tract, gallbladder polyps, carcinoma of the gallbladder, cancer of the gallbladder, gallbladder cancer, porcelain gallbladder, cholecystitis, gallbladder lesions






Workup: Gallbladder Tumors