Many people develop lumps and bumps around the hand and fingers. Some might be following trauma to the hand , where some usually superficial cells get deposited into the deep tissue and take root here, forming an epidermoid inclusion cyst. Others develop spontaneously, and among the more serious are the giant cell tumour of tendon sheath (GCTTS) and to a lesser degree glomus tumours.

The GCTTS is not a true tumour and no cases of metastasis have been reported. It however is serious and progressive, and if left unchecked may end in an amputation of the finger. The management of this tumour is operative and it is imperative to get all of the tumour out.