A Rare Case of Giant-Cell Tumor of Hand in a Young Male.

Giant-cell tumor (GCT) of the bone affecting the hand is a rare lesion that is usually diagnosed at an advanced stage and has a high rate of recurrence. In the current literature, GCT is described as a predominantly osteoclastogenic stromal cell tumor of mesenchymal origin. It is composed of three cell types: the neoplastic GCT stromal cells; mononuclear monocyte cells; and multinucleated giant cells. Clinical imaging is basic for the diagnosis of a GCT. This tumor within the hand tends to be less eccentric and most often central. GCT of metacarpals is noted to be a rare location, with the incidence being as low as 2%. GCT on hand as compared to other sites is locally more aggressive, grows faster, and has a higher recurrence rate. A 22-year-old male patient presented with swelling over the left hand for 7 months, spontaneous in onset, gradually progressive in size, and painfully restricting the joint movement, with no history of fall or trauma. On examination, diffuse swelling of size 5 × 5 × 3 cm was tender on palpation, restricting the movement at the 4th metacarpophalangeal joint. A plain radiograph followed by an MRI scan revealed a Campanacci's Grade III GCT of the 4th metacarpal. An open biopsy showed an expanded and lytic mass with areas of hemorrhage and necrosis. There were few mitotic figures and the tumor was diagnosed to be a GCT. On surgical resection, friable tumor tissue was noted over the region of the entire 4th metacarpal except for the base. The patient was managed by surgical intralesional excision of the mass, followed by Kirschner-wire fixation and reconstruction with synthetic bone graft. The excised tissue was sent for histopathological examination. The patient was followed up at regular intervals, with initial splinting, followed by wire removal at 6-week post-op, and with adequate physiotherapy, as tolerated by the patient. On a 3-month follow-up, the range of motion had returned to a functional level, with good uptake of graft, and no other complications. GCT of the hand is a rare presentation of the disease and requires meticulous workup, including a thorough clinical exam, hematological, radiological, and pathological workup. The various treatment modalities described in the literature for GCTs are curettage alone, curettage and bone graft, en-bloc resection, amputation, and resection with reconstruction, but curettage alone or curettage with bone graft is not effective even for GCTs of long bones and hand, too. Such a procedure creates a skeletal void and hence furthers the need for a challenging reconstructive procedure requiring reconstruction using autograft, allograft, or silastic (synthetic) implant.