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An 82-year-old man with microhematuria and class V cells in his urinary cytologic specimen was referred to our clinic. Cystoscopy revealed a solid, broad-based tumor of 1 cm in diameter in the bladder diverticulum. A partial cystectomy was performed. The tumor was composed of transitional cell carcinoma (TCC), sarcomatous spindle cells and the area of transition between TCC and spindle cells. The histopathological diagnosis was sarcomatoid carcinoma. Immunohistochemical examination showed that the spindle cells and the area of transition were positive for keratin, cytokeratin, vimentin and muscle actin. The histopathological and immunohistochemical transitions between the TCC and the spindle cells suggested that the sarcomatous elements originated from the TCC during tumor progression.
M Nakao, and
K Toyoda
January 2002,
Urologia internationalis,
M Nakao, and
K Toyoda
May 1999,
Pathology international,
M Nakao, and
K Toyoda
January 1992,
Hinyokika kiyo. Acta urologica Japonica,
M Nakao, and
K Toyoda
October 1992,
Archivos espanoles de urologia,
M Nakao, and
K Toyoda
June 2010,
Medical oncology (Northwood, London, England),
M Nakao, and
K Toyoda
October 1995,
Nihon Hinyokika Gakkai zasshi. The japanese journal of urology,
M Nakao, and
K Toyoda
February 1991,
Gynecologic oncology,
M Nakao, and
K Toyoda
June 2002,
Hinyokika kiyo. Acta urologica Japonica,
M Nakao, and
K Toyoda
January 2018,
Case reports in oncology,
M Nakao, and
K Toyoda
December 2018,
Indian journal of surgical oncology,
