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The Korean Journal of Pathology 2008;42(1): 54-59.
Mucinous Tubular and Spindle Cell Carcinoma of Kidney Occurring in a Patient with Pulmonary Adenocarcinoma.
Seog Yun Park, Gyeong Hoon Kang, Jae Y Ro, Jennifer Black, Jinsoo Chung, Kang Hyun Lee, Eun Kyung Hong, Weon Seo Park
1Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
2Weill Medical College of Cornell University, the Methodist Hospital, Houston, TX, USA.
3National Cancer Center, Goyang, Korea. thymus@ncc.re.kr
ABSTRACT
Mucinous tubular and spindle cell carcinoma (MTSCC) is a rare type of kidney tumor that has only been recently described. Furthermore, a case of MTSCC associated with a simultaneous lung cancer in the same patient has never been reported in the literature. In this paper, we describe a kidney tumor that was detected during staging work-up in a 72-year-old lung cancer patient. The kidney tumor was removed and shown to exhibit histological and immunophenotypic features of MTSCC, completely distinct from the pulmonary adenocarcinoma. In addition, this case was unique because it was characterized by neuroendocrine differentiation as well as p53 and Ki-67 overexpression in tumor cells. Therefore, we report a case of MTSCC diagnosed in a patient with pulmonary adenocarcinoma and describe the detailed histologic and immunohistochemical features of MTSCC.
Key Words: Spindle cell carcinoma; Kidney neoplasm; Lung cancer; Multiple primary neoplasm