Tumour thrombus is a complication that occurs when a malignancy invades into the vasculature, occluding its lumen. Here, we present a rare case of melanoma tumour thrombus of the great saphenous vein of the left thigh, which was diagnosed on 18 F-fluorodeoxyglucose positron emission tomography/computed tomography and ultrasound-guided biopsy, and responded well to immunotherapy with pembrolizumab.
Keywords: F-18 FDG PET/CT; immunotherapy; melanoma; metastasis; tumour thrombus.
© 2020 The Royal Australian and New Zealand College of Radiologists.