Unusual isolated splenic metastasis secondary to thymic carcinoma

Splenic metastasis usually dose not occur in the absence of disseminated metastatic disease. Isolated splenic metastasis secondary to thymic carcinoma, which rarely metastasizes extrathoracically, has never been documented in the literature. We present a 74-years-old man with an isolated splenic metastasis secondary to thymic carcinoma. The imaging findings and pathogenesis of the splenic metastasis were discussed and the literature was reviewed.