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Giant cell tumor (GCT) is one of the most common benign bone tumors that can metastase to distant organs such as lungs as the most common site; however, pulmonary metastasis does not mean poor prognosis. We report a case of lung metastasis of giant cell tumor with varicose vessels within them, which is an extremely rare radiological appearance. Varicose vessels within these metastases have the same radiologic appearance resembling arteriovenous malformation (AVM), and if diagnosed inaccurately it can affect patient management significantly. As these varicose vessels have a potential risk of bleeding during biopsy or even spontaneously that can lead to hemothorax, we recommend contrast enhanced computed tomography scan (CT scan) after detecting lung metastasis in patients with giant cell tumor. We report here a case of varicose vessels within lung metastasis of giant cell tumor, which is a rare radiologic manifestation.

Varicose Vessels Within Pulmonary Metastasis of Giant Cell Tumor: Unusual Radiological Manifestation