Imaging recommendation · Musculoskeletal

Painful joint with hemorrhagic effusion, suspected PVNS / tenosynovial giant cell tumor

Q: What's the alternative imaging for painful joint with hemorrhagic effusion, suspected pvns / tenosynovial giant cell tumor when pre-surgical planning / extent assessment?

MRI — MRI with gradient echo / SWI (iv contrast).

Recommended: MRI affected joint (T2 blooming from hemosiderin) is the preferred imaging study for painful joint with hemorrhagic effusion, suspected pvns / tenosynovial giant cell tumor. Now classified as tenosynovial giant cell tumor (localized or diffuse).

Recommended study

MRI affected joint (T2 blooming from hemosiderin)

MRI IV contrast Preferred Musculoskeletal Outpatient Reviewed 2026-05

Now classified as tenosynovial giant cell tumor (localized or diffuse). Knee most common, then hip, ankle, hand.

If the default doesn't apply

Pre-surgical planning / extent assessment

MRI MRI with gradient echo / SWI IV contrast

Watch-outs

Local recurrence after resection

Diffuse type has high recurrence — staged synovectomy + radiation in selected cases.

Pearls

Blooming artifact on gradient echo from hemosiderin — diagnostic.
Joint erosions on both sides of joint, preserved joint space.
Pexidartinib (CSF1R inhibitor) for inoperable diffuse-type.