Acta Med. 2009, 52: 163-166

Portal Vein Tumor Thrombus of Liver Metastasis from Lung Cancer

Ryoko Ogawaa,b, Takahide Kodamaa, Koichi Kurishimab, Katsunori Kagohashib, Hiroaki Satohb

aDivision of Respiratory Medicine, Ryugasaki Saiseikai Hospital, Japan
bDivisions of Respiratory Medicine, Institute of Clinical Medicine and Mito Medical Center, University of Tsukuba, Japan

Received September 25, 2009
Accepted December 10, 2009

We report a case of liver metastasis of lung carcinoma with portal vein tumor thrombus (PVTT). Although the primary lesion of lung tumor remained unchanged, the patient rapidly developed wide-spread metastases and formed PVTT of liver metastasis. The primary lesion showed features of mixed Clara and bronchial surface epithelial cell component type adenocarcinoma with small foci of micropapillary pattern. Micropapillary pattern was observed in the metastatic lesions in the liver and PVTT. Micropapillary pattern lung adenocarcinoma may develop rapid metastases and cause PVTT associated with liver metastasis. We should perform a detailed examination to establish correct diagnosis.


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