Lobulated ganglion cyst - knee

Case contributed by Leonardo Lustosa
Diagnosis almost certain

Presentation

Anterior knee pain and growing lump over a few weeks.

Patient Data

Age: 60 years
Gender: Male

Lobulated and elongated cystic formation from a distal part of the medial femoropatellar retinaculum region, extending to the subcutaneous plane in the medial paraligamentary patellar region, projecting to the inferior aspect of Hoffa's fat and surrounding the medial aspect of the proximal tibia, extending to a posterior portion.

Discrete post-contrast parietal enhancement.

Horizontal meniscal tear on the red zone of the posterior horn of the medial meniscus.

Case Discussion

Ganglion cysts are non-malignant cystic masses that occur in association with musculoskeletal structures.

Meniscal tears can occur after trauma to the knee or, in older adults, they can be the result of repetitive attrition forces.

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