顆粒性肉瘤為一少見之惡性血液腫瘤，為增生於骨髓外之骨髓生長前置細胞腫瘤，並會散佈於全身各處。鎵-67掃描用於評估顆粒性肉瘤之臨床價值未定。本文報告一例31歲男性病例，經病理證實為顆粒性肉瘤之鎵-67掃描結果。全身鎵-67掃描發現在篩骨、鼻腔、鼻竇、頸部、胸部、縱隔腔、腹腔等多部位發現有明顯異常攝取增加之病灶。本病例報告證實顆粒性肉瘤會攝取鎵-67、鎵-67掃描可全身評估顆粒性肉瘤侵犯之部位。

　　　　　Granulocytic sarcoma is an extramedullary tumor of myeloproliferative precursors and may involve multiple sites of body. The role of gallium scan in patients with granulocytic sarcoma is uncertain. This article demonstrates the findings of gallium-67 scan on a case with granulocytic sarcoma that was proved by histopathology and immunohistology. The gallium-67 scan revealed multiple focal areas with intensively abnormal uptake of gallium-67 in the ethmoid, right nasal, right maxillary, bilateral neck, bilateral chest, mediastinal, abdominal, pelvic and bilateral renal regions. The gallium-67 scan indicated the disease was widespread and suggested poor prognosis of the patient. This article delineates granulocytic sarcoma has high affinity for gallium-67 and suggests gallium-67 scan has the role for the whole body evaluation of the extension of granulocytic sarcoma.