Tenosynovitis

Question 1

What are the 2 types of tenosynovitis?

Answer 1

Giant cell tumour of tendon sheath
Pigmented villonodular synovitis

Question 2

What is a giant cell tumour of the tendon sheath?

Answer 2

This is a benign nodular tumour of unknown aetiology, found on the tendon sheath of the hands and feet

Question 3

Describe the histology of giant cell tumours of the tendon sheath

Answer 3

Benign regenerative hyperplasia with reactive proliferation (Inflammation)

Question 4

How do giant cell tumours of the nerve sheath present?

Answer 4

They present as firm, discreet swellings, usually on the volar aspect of the digits

They may or may not be tender

Question 5

How are giant cell tumours of the tendon sheath managed?

Answer 5

If there is no functional issue, they can be left alone

Otherwise, they are treated by excision and rarely recur

Question 6

Describe the pathology of pigmented villonodular synovitis

Answer 6

These have a similar histology to giant cell tumours of the tendon sheath, however, they commonly affect the larger joints and are most likely to recur