Morphology of gonads in pure XY gonadal dysgenesis.

The authors gathered 20 patients having Swyer's syndrome and performed a bilateral gonadectomy and carried out a pathohistologic evaluation of the streak gonads. A more frequent occurrence of streak gonad tumors was found together with the possibility of tracing the merge gonadoblastoma into dysgerminoma (the youngest patient was 15 years old). In 95% of the streak gonads checked an ovary-like stroma was found. In 11 of the patients (55%) one of the above mentioned tumors was found. A frequent finding was the presence of Leydig-type cells, calcifications and the remains of Wolffian canals. In three streak gonads, the corpora albicans-like formations were found.