Abstract
The high number of knee imaging exams at radiology clinics, together with the wide variety of knee disorders, calls for expanding the knowledge about the less common lesions seen in routine diagnostic practice. The purpose of this pictorial essay was to illustrate unusual lesions that distend the knee joint, selected by relevance and evaluated with multiple imaging modalities, including X-ray, computed tomography, and magnetic resonance imaging, as well as to perform a brief review of the literature.
Highlights
A number of recent studies conducted in Brazil have highlighted the importance of imaging methods in the evaluation of diseases affecting the musculoskeletal system[1,2,3,4,5,6,7,8,9]
The knee is the site of a variety of changes, degenerative and traumatic changes such as fractures and meniscal tears, as well as osteochondral and ligament lesions, which are usual in routine diagnostic practice
Intracapsular chondromas belong to the third group and are benign tumors arising from chondroid metaplasia of connective tissue of the joint capsule[14]
Summary
A number of recent studies conducted in Brazil have highlighted the importance of imaging methods in the evaluation of diseases affecting the musculoskeletal system[1,2,3,4,5,6,7,8,9]. The high demand for imaging exams to evaluation this articulation calls for knowledge of less common knee lesions, such as pseudotumors and tumors (malignant and benign), such as intracapsular chondroma and lipoma arborescens. All of these diseases have their own radiological approach, which is essential for the diagnostic rationale, which prompts a discussion of their aspects. 2. MD, Radiologist, Head of the Residency Program in Radiology and Diagnostic Imaging at Hospital das Clínicas da Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil. 3. PhD, Head of the Residency Program in Angiography and Endovascular Surgery at Hospital das Clínicas da Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil
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