Giant cell tumour of the tendon sheath (GCTTS) is a rare benign soft tissue tumour with no known cause. It is more prevalent in the hand than in the ankle and foot. It appears as a non-painful, perceptible enlargement. Although pre-operative imaging and fine-needle aspiration cytology (FNAC) corroborate suspicion, histology following surgical resection is used to confirm the diagnosis. Due to its rarity, a case of giant cell tumour (GCT) of the extensor tendon sheath of the left ring finger is reported here. A 39-year-old female presented with a six-month history of painless swelling over left ring finger. The swelling was spontaneous, slowly progressive and painless. On clinical examination, a 1.5 cm x 1 cm firm swelling was seen on the dorsal surface of the left ring finger extending from the distal portion of the middle phalanx to the proximal half of the distal phalanx. The swelling was well-defined, smooth, firm, and uniform in consistency. The swelling was movable sideways with no attachment to the bone when examined clinically. X-ray of the hand showed soft tissue mass without the involvement of the bone. Soft tissue mass was seen on ultrasonography. An excisional biopsy was done. Histopathology showed typical features of GCTTS. Our case is a rare example of GCTTS in a single digit of the hand. Furthermore, considering its high recurrence risk, the tumour should be totally excised. Finally, if required, the hand's function should be recreated to minimise the loss.

Giant cell tumors (GCTs) are rare, benign, and locally invasive tumors, typically found in the epiphysis of long bones, most commonly at the distal femur and proximal tibia. To date, GCTs of the distal end of the ulna have been very rare. We document a case of a 38-year-old female with a distal ulna GCT, managed with en-bloc resection of the tumor with flexor carpi ulnaris and extensor carpi ulnaris tendon stabilization. The main aim of the GCT treatment is to prevent local recurrence and to maintain the function of the limb. Physical therapy was also given to the patient which helped in relieving pain, reducing edema, and increasing strength and range of motion. The patient was able to perform activities of daily living with the help of physical therapies and exercises. More research is needed to determine if broad excision of the distal ulna alone is a successful therapy for primary bone cancers affecting the distal ulna, including GCTs.

Giant cell tumours (GCTs) of the medial epicondyle of the humerus are rare. These are generally benign tumours but have the potential to be locally aggressive. They can invade the adjacent joint or the surrounding soft tissues or, in rare cases, cause distant metastasis. Locally aggressive GCTs are generally treated with wide resection, curettage, and bone grafting, followed by joint reconstructions. Here we present a case of a 49-year-old female with a history of swelling over the medial epicondyle of the humerus for six months. The patient was diagnosed with a locally aggressive GCT and was managed with wide excision of the tumour followed by sandwich bone grafting. A two-year follow-up of the patient shows no signs of recurrence. The patient is pain-free and has decent elbow function.