内反性増生を示す尿路上皮腫瘍の臨床病理像について

Abstract

1例のinverted papillomaと6例の逆行型移行上皮癌の症例を呈示した.逆行型移行上皮癌には悪性度浸潤度様々のものがあり, 再発例や多発例もみられ, 発育様式が異なるだけで, 通常の乳頭状移行上皮癌と相対すると思われた

We reported a case of inverted papilloma of the bladder, and six cases (two of ureteral cancer and four of bladder cancer) of transitional cell carcinoma with inverted proliferation. These tumors were superficial and pedunculated as well as transitional papilloma or ordinary papillary transitional cell carcinoma though they showed a non-papillary and polyp-like configuration. Moreover, these urothelial cancers with inverted proliferation were thought to be similar to papillary cancer with regard to grading, multiplicity, invasiveness and recurrence. Therefore, transurethral resection or segmental ureterectomy may be recommended for the tumor of low grade malignancy and radical treatment including systemic chemotherapy may be recommended for the tumor of high grade malignancy.