Does a Porcelain Gallbladder Equal Gallbladder Cancer?
Polk HC Jr (1966) and Cornell CM et al (1959) reported the incidence of gallbladder cancer (GBC) to range from 12–62% when porcelain gallbladder (PGB) is seen. The standard for treatment of porcelain gallbladder is prophylactic cholecystectomy. In the past decade, three large studies by Towfigh S et al (2001), Stephen AE et al (2001), and Khan ZS et al (2011) evaluated this teaching.
What they did:
- Evaluate characteristics of patients with PGB and risk for GBC
- Retrospective review of 10,741 cholecystectomies
Results:
- 15/10,741 (0.14%) had PGB
- 88/10,741 (0.82%) had GBC
- No carcinoma identified among patients with PGB
- No carcinoma identified among patients with calcified gallbladder
Conclusion: There is no association of PGB and GBC.
What they did:
- Is there a correlation between calcified gallbladder and GBC
- Retrospective review of 25,900 cholecystectomies at Massachusetts General Hospital
Results:
- 150/25,900 (0.58%) had GBC
- 44/25,900 (0.17%) had Calcified Gallbladder
- 17/44 (38.6%) had complete intramural calcification of GB
- No GBC seen in complete intramural calcification of GB
- 27/44 (61.4%) had selective mucosal wall calcification of GB
- Incidence of GBC in selective mucosal wall calcification was 7% (OR 13.89)
Conclusion: The incidence of GBC depends on the pattern of calcification; selective mucosal calcification poses a significant risk of cancer whereas diffuse intramural calcification does not.
What they did:
- Evaluate the risk of GBC in patients with PGB
- Retrospective analysis of 1200 cholecystectomies performed
Results:
- 13/1200 (1.1%) patients had a PGB
- None of the patients with a PGB had evidence of GBC
Conclusion: PGB is not associated with GBC.
In my opinion, how will this affect your practice?
- Complete intramural calcification of the gallbladder has no association with gallbladder cancer
- Selective mucosal wall calcification of the gallbladder has a 7% incidence of gallbladder cancer
- Not all porcelain gallbladders require prophylactic cholecystectomy
References:
1. Khan ZS et al. Reassessing the Need for Prophylactic Surgery in Patients With Porcelain Gallbladder. Arch Surg 2011; 146 (10): 1143 – 1147. PMID: 22006872
2. Stephen AE et al. Carcinoma in the Porcelain Gallbladder: A Relationship Revisited. Surgery 2001; 129: 699 – 703. PMID: 11391368
3. Towfigh S et al. Porcelain Gallbladder is Not Associated with Gallbladder Carcinoma. Am Surg 2001 Jan; 67 (1): 7 – 10. PMID: 11206901
_______________________________________________________________________________Dr. Salim R. Rezaie is a physician at the University of Texas Health Science Center at San Antonio. He is double board-certified in Emergency Medicine and Internal Medicine.