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Morphometry and Histology of Gonads from Twelve Children and Adolescents with the Androgen Insensitivity (Testicular Feminization) Syndrome^*

Laboratory of Reproductive Biology, University Department of Obstetrics and Gynecology Y and University Department of Pediatrics G, Rigshospitalet, and University Department of Pediatrics Hvidovre Hospital, Copenhagen, Denmark

Address correspondence and requests for reprints to: Jørn Mviller, M.D., Laboratory of Reproductive Biology, University Department of Obstetrics and Gynecology Y, Section 4052, Rigshospitalet, DK-2100, Copenhagen 0, Denmark.

Gonadal histology was investigated by means of stereology and conventional microscopy in 12 patients, aged 2 months to 19 yr, with the androgen insensitivity syndrome (AIS). Eight patients had the incomplete variant of the syndrome and 4 patients had the complete form. Testicular tissue was removed as a prophylactic measure in all patients. In 6 patients less than 5 yr of age testicular histology was normal, except for slightly decreased mean tubular diameters, and, in 1 of the patients, abnormal morphology of the germ cells including a carcinoma in-situ pattern. The number of germ cells was within the normal range in these 6 patients. In contrast, in older patients (>7 yr of age), germ cells were absent or present only in small foci. In patients with the complete AIS the testicular histology also was immature after puberty, whereas some maturation and subsequent degeneration was found in adolescent patients with the incomplete form of the syndrome. In addition, 2 of these latter patients had a carcinoma-m-sttu germ cell pattern. Although patients with the AIS have no reduction of the number of germ cells during the first years of life, this syndrome is associated with abnormal morphology of the germ cells, including patterns of carcinoma-tn-situ and impaired pubertal maturation of the seminiferous tubules and the germ cells, in older patients.

^* This work was supported by grants from the Danish Cancer Society (26/82) and the Research Foundation of Queen Louise Children's Hospital (2/12/79).

Received February 2, 1984.

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