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Para-articular and intra-articular soft tissue lesions: Radiologic-pathologic correlation
Journal article   Peer reviewed

Para-articular and intra-articular soft tissue lesions: Radiologic-pathologic correlation

Youssef Ghosn, Raquelle Alam, Tamara El Annan, Gaelle Haddad, Mihran Khdhir, Lama Farhat, Rayan Hafez, Hicham Moukaddam, Nabil Khoury and Riad Khouzami
European journal of radiology, Vol.181, 111718
12/2024
DOI: 10.1016/j.ejrad.2024.111718
PMID: 39357286

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Abstract

•Understand the concept of intraarticular space and what defines an intraarticular mass.•Recognize the imaging features of typical benign and malignant intraarticular neoplasms and correlate them to the pathologic findings.•Describe multiple non neoplastic mimickers that should be considered prior to making a diagnosis. Articular masses comprise various disease entities including benign or malignant proliferative processes and other non-neoplastic processes such as infection, deposition diseases, vascular malformations, and other lesions. Many diseases that lead to intra-articular or para-articular masses have distinct imaging features, particularly on MRI. Radiologists can localize masses to the joint space by knowing the articular anatomy and can reach a suggested diagnosis by looking at precise imaging findings. In this review article, we first define the concept of articular space (intraarticular, para-articular) and the normal joint anatomy and histology. We provide a general and comprehensive approach for evaluation of articular lesions on MRI. We then describe specific imaging and histologic features of typical benign and malignant soft tissue articular neoplasms and some non-neoplastic mimickers; and provide a radio-pathologic correlation of the different described entities.
 articular anatomy articular lesions benign articular masses intra-articular masses malignant articular masses

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