Leiomyoma of the urinary bladder: a cytogenetic study of a case.

We report the first case of a leiomyoma of the urinary bladder studied by cytogenetics. In comparison with cytogenetic changes of leiomyomas of other sites, the karyotype of the tumor was unusual: 47,XX,+7/89 approximately 93,XXXX,-1,+7,+7,add(12)(q23.4),+add(12)(q23.

A clonal t(8;12)(p11.2;q24.3) as the sole abnormality in a solitary fibrous tumor of the pleura.

A case of solitary fibrous tumor of the pleura with the karyotype 46,XY,t(8;12)(p11.2;q24.3) is reported.

A clonal translocation (7;8)(p13;q11.2) in a leiomyoma of the vulva.

We present the first case of a vulvar leiomyoma studied by cytogenetics. The tumor formed a 3.0-cm periurethral nodule in a middle-aged woman and was positive for the muscle markers desmin and caldesmon, and for estrogen and progesterone receptors.

Cardiac myxoma: a cytogenetic study of two cases.

Two cases of cardiac myxoma, each arising in the left atrium, are presented. One tumor contained the clonal abnormality i(17)(q10),der(20)t(1;20)(q21;q11.2) and the second tumor contained add (9)(p22),+12.