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Described herein are two brothers with 21-hydroxylase deficiency (21-OHD) associated with adrenal tumors, and these possible mechanisms are discussed. A 34-year-old male was admitted on Jan. 9, 1984 because of an enlarged and tender left breast. Physical examination revealed short stature (152 cm, 76.5 kg), gynecomastia and shortening of metacarpal bone. His testes were small (2.6 X 1.6 X 1.9 cm). Urinary excretion of 17-OHCS was within normal range (5.9 mg/day), but those of 17-KS, 17-KGS and pregnanetriol were markedly increased (44.4, 110 and 22.6 mg/day, respectively). Plasma concentrations of progesterone and ACTH and urinary excretions of estrone, estradiol and estriol were also increased. Urinary excretions of 17-KS were decreased to 11.7 mg/day and 17-KGS to 22.3 mg/day after the ingestion of 2 mg/day dexamethasone for two days. The computed tomography and a scintigraphy with 131I-Adosterol revealed a tumor in the left adrenal gland, and the adrenal arteriography revealed a neovascularity and a tumor stain in the tumor. These data indicated that the patient was suffering from both 21-OHD and the left adrenal tumor. At this point, adenoma or adenocarcinoma of the adrenal gland was suspected. The left adrenal tumor (85 g) was resected on April 10, 1984, and the pathological diagnosis was adrenal adenoma. The patient's endocrinological abnormalities, however, did not improve after the operation. Urinary excretions of 17-KS and KGS were increased to 57.9 and 108.5 mg/day, respectively, in the patient's elder brother, and 63.3 and 127.9 mg/day, respectively, in his younger brother, indicating that they also had 21-OHD. Interestingly, an adrenal tumor was diagnosed by abdominal computed tomography in the elder brother who had the same HLA typing as the present case. The three brothers had 21-OHD, and two of them had both 21-OHD and adrenal tumor. To our knowledge, this is the first report documenting the co-existence of adrenal tumors in brothers with 21-OHD. This suggests that adenoma can be one of the complications of 21-OHD, probably due to the chronic stimulation by ACTH, and that a possible linkage to HLA may exist in such cases.
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Vnitrni lekarstvi,
