Abstract
A tenosynovial giant cell tumor (TGCT) is a benign lesion whose presence in Hoffa's pad has rarely been reported. This unique case report discusses a 33-year-old female patient who presented with swelling and pain in her left knee. Clinical and MRI findings were used to make the diagnosis, which was confirmed on a histopathological basis. The patient had a large tumor (5 × 3 × 3 cm) in Hoffa's fat pad, which was diagnosed as TGCT and managed with open resection due to its size. At follow-up after 20 months, the patient was asymptomatic, and there was no local recurrence of the tumor.
Highlights
A tenosynovial giant cell tumor (TGCT) is a benign lesion of the tendon sheath, synovial membrane, or bursa [1]
A tenosynovial giant cell tumor (TGCT) is a benign lesion whose presence in Hoffa's pad has rarely been reported. This unique case report discusses a 33-year-old female patient who presented with swelling and pain in her left knee
It manifests in two forms, consisting of a localized form that involves an area of tendon sheath or synovial membrane, whereas the diffuse form is extensively involved with the synovium [2,3]
Summary
A tenosynovial giant cell tumor (TGCT) is a benign lesion of the tendon sheath, synovial membrane, or bursa [1]. MRI of the left knee showed a well-marginated soft tissue space occupying lesion in Hoffa's fat pad abutting the anterior joint capsule, with isointensity to muscle in T1-weighted images (Figure 2A) and low to intermediate signal intensity in T2 images (Figure 2B). Follow-up at 20 months indicated that the patient was asymptomatic with an Oxford knee score of 58 and had near full range of motion in the affected knee. She was able to return to her previous level of daily activities, and there was no local recurrence of the tumor
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