title: Radiological reasoning: Acutely painful swollen finger.
abstract: OBJECTIVE
  The purpose of this article is to review the differential diagnosis of finger masses and their imaging appearances.
  
  
  CONCLUSIONS
  Giant cell tumor of the tendon sheath is a slowly growing, benign tumor of the synovium that commonly presents as a painless nodular mass in the hand or wrist. Also termed "localized nodular tenosynovitis," these tumors are the most common soft-tissue tumors of the hand. Occasionally, these tumors can present with pain when traumatized, and they should be suspected when a firm, rubbery mass is found at the location of a tendon sheath.
authors.forename: Patrick T
authors.initials: PT
authors.lastname: Liu
mesh_terms: D000328:Adult; D004487:Edema / Q000473:pathology*; D005385:Fingers / Q000473:pathology*; D005870:Giant Cell Tumors / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D009372:Neoplasms, Connective Tissue / Q000150:complications* / Q000175:diagnosis*; D010146:Pain / Q000175:diagnosis / Q000209:etiology*; D013710:Tendons / Q000473:pathology*