Abstract

Case Presentation: A 43 year-old female was diagnosed at birth with non-salt wasting congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency and underwent clitoral reduction surgery. She was treated with hydrocortisone and had menarche at age 7 with irregular and heavy menses. At age 15 she had a D&C with removal of “something in her ovaries.” She stopped hydrocortisone at age 30 except for stress doses during illness. At age 35 she stopped oral contraceptives and thereafter has been amenorrheic. She presented with abdominal distention and constipation. On exam she had short stature, marked frontal and temporal balding, hirsutism, increased musculature and a large distended abdomen. Labs showed AM cortisol 3.1 mcg/dL (nl 10–20), ACTH 440 pg/ml (nl <46), 17-OH Progesterone 11000 ng/dL (nl <206), DHEAS 362 mcg/dl (nl <430), FSH 0.2 mIU/ml, LH 2.7 mIU/ml, testosterone 618 ng/dl (nl 10–75), and estradiol 162 pg/ml (nl post menopause <41). MRI showed a massive fibroid (30 cm), bilateral adrenal hyperplasia and a left paraaortic, retroperitoneal mass (5.9 cm). She underwent hysterectomy with removal of a 9.5 kg uterus containing degenerated fibroids, left adrenalectomy and removal of the left paraaortic mass that was initially read as oncocytic adrenal cortical neoplasm, metastatic. A similar oncocytic neoplasm was noted in the left adrenal gland and on further review with pathology the revised report read paraaortic mass, probable adrenal rest tumor. Discussion: Excess androgens and chronically elevated ACTH levels in untreated CAH can lead to adverse effects beyond adrenal insufficiency and virilization. We present a woman with untreated classic CAH who developed a large fibroid and paraaortic adrenal cortical tumor. Fibroids have been described in CAH patients, a potential consequence of elevated androgens that are converted by aromatase in the endometrium to estrogens driving growth of fibroid tumors. Chronic ACTH can further act as a growth factor, leading to adrenal hyperplasia, adrenal tumors and ectopic adrenal rest tissue. Intra-adrenal tumors in untreated CAH are generally benign with rare cases of adrenal cortical carcinoma reported.Ectopic adrenal rest tissue in untreated CAH is most commonly reported in testes. There have been rare case reports of ectopic adrenal rest tumors in the adnexa, broad ligament, and perirenal area. Our patient presents as an unusual case of ectopic adrenal rest tumor in the paraaortic region. Based on the atypical location and incomplete history available to the pathologist, it was initially read as metastatic adrenocortical carcinoma. Upon further review given the clinical information, the diagnosis was revised to indicate a pararenal adrenal rest tumor. This case highlights the importance of glucocorticoid compliance in CAH and the necessity to provide a clinical context for the pathologist in cases of extra-adrenal tumors in untreated CAH.

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