Ga-67 Visualizing Metastases of Malignant Melanoma to Gastric Cancer

Metastases of one cancer to another coexisting neoplasm, whether it is malignant or not, in the same individual is extremely rare. Fewer than 100 cases have been described in the literature; the most frequent combination of this metastatic pattern has been bronchogenic carcinoma metastasizing to renal cell carcinoma. To the authors' knowledge, no case of malignant melanoma metastasizing to the inside of a gastric cancer lesion has been published. In our present case, it might be appropriate to think that an enlarged gastric cancer may have accounted for the avid accumulation of Ga-67. Nevertheless, the strongly speckled accumulation observed in the epigastrium may represent metastatic foci of the melanoma within the gastric cancer.