Radiological and pathological features of AIDS-related polypoid cholangitis

Area of Science:

• Gastroenterology
• Hepatology
• Radiology

Background:

• AIDS-related sclerosing cholangitis (ARSC) is a serious complication in HIV patients.
• Radiographic findings in ARSC can be varied and complex.
• Intraluminal abnormalities within the biliary system require detailed characterization.

Purpose of the Study:

• To describe the radiological features of polypoid lesions in the bile ducts of patients with ARSC.
• To correlate these radiological findings with microbiological and histological data.
• To propose a new term for this specific entity: AIDS-related polypoid cholangitis (ARPC).

Main Methods:

• Review of endoscopic retrograde cholangiopancreatography (ERCP) radiographs from 31 patients with ARSC.
• Microscopic examination of biopsy specimens and post-mortem tissues.
• Correlation of imaging findings with microbiological and histological results.

Main Results:

• Eight out of 31 patients (26%) with ARSC showed intraluminal polypoid defects in the common bile duct and larger intrahepatic ducts.
• Microscopic analysis revealed these polypoid lesions were composed of granulation tissue.
• The presence of these polyps was not associated with specific infective agents and did not worsen patient prognosis.

Conclusions:

• Polypoid lesions in the bile ducts are a distinct radiological finding in a subset of ARSC patients.
• These lesions appear to be benign, consisting of granulation tissue.
• The proposed term AIDS-related polypoid cholangitis (ARPC) aims to recognize this specific clinical-radiological entity.