# Primary adrenal mantle cell lymphoma mimicking a non‐functional retroperitoneal paraganglioma

## TL;DR

A case of primary adrenal mantle cell lymphoma was mistaken for a non-functional retroperitoneal paraganglioma based on imaging and symptoms.

## Contribution

This case highlights the diagnostic challenge of distinguishing mantle cell lymphoma from paraganglioma using imaging alone.

## Key findings

- A retroperitoneal mass initially suspected as a paraganglioma was diagnosed as mantle cell lymphoma post-surgery.
- Histological analysis was crucial for accurate diagnosis, as imaging could not differentiate the two conditions.

## Abstract

Patients presenting with abdominal pain and retroperitoneal mass in radiographic images may be in the early stages of primary adrenal mantle cell lymphoma, which requires histological studies for a definite diagnosis.

This report presents a 37‐year‐old woman complaining of ambiguous abdominal pain, with imaging findings revealing a retroperitoneal abdominal mass on the left side of the aorta, and a possible diagnosis of non‐functional retroperitoneal paraganglioma. Total laparoscopic excision was performed. Surprisingly, histological examinations revealed features in favor of mantle cell lymphoma.