Radiographic features predictive of recurrence and survival after surgical resection of perihilar cholangiocarcinoma

Area of Science:

• Oncology
• Radiology
• Surgical Pathology

Background:

• Perihilar cholangiocarcinoma (PCCA) is a challenging malignancy requiring surgical resection.
• Identifying prognostic factors for recurrence and adverse outcomes is crucial for patient management.

Purpose of the Study:

• To determine radiographic features associated with PCCA recurrence and adverse outcomes post-surgery.
• To identify imaging patterns indicative of PCCA recurrence after resection.

Main Methods:

• Retrospective, analytical, case-control study of 77 PCCA patients undergoing surgical resection.
• Analysis of demographic data, recurrence patterns, radiographic imaging, and surgical information.
• Survival and multivariate analyses were performed.

Main Results:

• Recurrence rate was 65%. Regional lymph node (LN) metastasis, adjacent organ invasion, and R1 resection margins were independent predictors of recurrence.
• Regional LN metastasis was associated with significantly lower overall survival (OS) (22 vs. 46 months) and higher mortality.
• Adjacent organ invasion and R1 resection margins also correlated with reduced OS and increased mortality.

Conclusions:

• Regional LN metastasis, adjacent organ invasion, and R1 resection margins are critical factors for PCCA recurrence and reduced OS.
• Common recurrence patterns include local spread and distant metastasis (lungs, liver).
• Consideration of periductal fat or adjacent organ invasion in staging systems may improve PCCA prognosis and treatment.