Primary renal lymphoma of mucosa-associated lymphoid tissue.

Mucosa-associated lymphoid tissue-type lymphomas have recently been recognized as a distinctive form of B-cell malignant lymphoma. In contrast to other types of low-grade lymphomas, these tumors have a tendency to be localized at diagnosis and to be curable with local therapy. We report an unusual case of primary localized low-grade lymphoma of mucosa-associated lymphoid tissue arising in the kidney.

Prognostic significance of estrogen receptor expression in superficial transitional cell carcinoma of the urinary bladder.

Objectives: The role of estrogens in human bladder cancer still remains to be resolved. This study was undertaken to determine the estrogen receptor (ER) expression status and to elucidate the prognostic significance of ER in superficial transitional cell carcinoma (TCC) of the human bladder.

Methods: Tumor tissue blocks which were obtained by transurethral resection (TUR) from 121 patients with superficial TCC and 30 control subjects were investigated.