Mirizzi syndrome and gallbladder cancer

Area of Science:

• Gastroenterology
• Surgical Oncology
• Hepatobiliary Surgery

Background:

• Mirizzi syndrome is a rare complication of gallstone disease (GSD).
• The association between Mirizzi syndrome and gallbladder carcinoma (GBC) requires further elucidation.
• This study reports on GBC in patients diagnosed with Mirizzi syndrome.

Purpose of the Study:

• To investigate the incidence of gallbladder carcinoma (GBC) in patients with Mirizzi syndrome.
• To compare the characteristics of patients with Mirizzi syndrome and associated GBC to those with Mirizzi syndrome alone and uncomplicated GSD.

Main Methods:

• Retrospective analysis of patient records from a tertiary care hospital.
• Focus on patients with Mirizzi syndrome who underwent cholecystectomy.
• Comparison of patient groups: Mirizzi syndrome with GBC, Mirizzi syndrome alone, and uncomplicated GSD.

Main Results:

• Mirizzi syndrome was identified in 2.8% of 4,800 cholecystectomies.
• Gallbladder carcinoma (GBC) was found in 5.3% of Mirizzi syndrome patients, versus 1% in uncomplicated gallstone disease (GSD).
• Patients with Mirizzi syndrome and GBC were older (mean age 60 vs. 50 years) and had longer symptom duration (59 vs. 24 months).

Conclusions:

• Patients with Mirizzi syndrome exhibit a higher incidence of gallbladder carcinoma (GBC) compared to those with uncomplicated gallstone disease (GSD).
• Clinical presentation does not reliably differentiate GBC in Mirizzi syndrome patients from those with Mirizzi syndrome alone.
• Diagnosis of GBC is frequently made on post-cholecystectomy histology, necessitating management similar to incidental GBC.