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Zorluk: OrtaReproductive Endocrinology and Infertility

Concerned by a complete cessation of her menstrual cycles over the past six months, a female in her late twenties visits a specialist. She and her partner have been having regular, unprotected intercourse for the past 14 months without a pregnancy. The patient expresses significant distress regarding a recent, rapid increase in coarse hair growth on her chin, chest, and lower abdomen, as well as a noticeable deepening of her voice. She has no chronic medical conditions and takes no medications. Her blood pressure is 122/78 mmHg, and her body mass index is 24 kg/m². Physical examination reveals temporal hair thinning, severe nodulocystic acne, and prominent clitoromegaly. Bimanual pelvic examination is unremarkable. Transvaginal ultrasonography reveals normal-sized ovaries lacking any cystic changes or solid masses. A urine pregnancy test is negative. Which of the following is the most appropriate next step in the evaluation of this patient?

  1. Measurement of serum testosterone and dehydroepiandrosterone sulfate levelsCevap
  2. B
    Initiation of weight loss counseling and combined oral contraceptives
  3. C
    Measurement of a basal morning 17-hydroxyprogesterone level
  4. D
    Computed tomography of the abdomen and pelvis
  5. E
    Measurement of serum prolactin and thyroid-stimulating hormone levels

Cevap

Measurement of serum testosterone and dehydroepiandrosterone sulfate levels
The correct action is to measure serum testosterone and dehydroepiandrosterone sulfate (DHEAS) levels. The patient's rapid-onset virilization (voice deepening, clitoromegaly, temporal thinning) over six months is highly suspicious for an androgen-secreting tumor. Biochemical evaluation is the required next step to localize the source: elevated DHEAS points to an adrenal tumor, while markedly elevated testosterone points to an ovarian tumor.

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1
Analyze the patient's clinical presentation and timeline.
The patient has a 6-month history of secondary amenorrhea coupled with rapid-onset, severe hyperandrogenism (hirsutism, acne) and virilization (clitoromegaly, voice deepening, temporal balding).
Differentiating between gradual hyperandrogenism and rapid virilization is the critical branch point in evaluating androgen excess in females.
2
Formulate a differential diagnosis based on the severity and onset.
Rapid-onset virilization is a red flag for an androgen-secreting tumor, differentiating it from benign, gradual conditions like Polycystic Ovary Syndrome (PCOS) or Non-Classic Congenital Adrenal Hyperplasia (NCAH).
Benign conditions rarely cause frank virilization such as clitoromegaly or voice changes in adulthood.
3
Determine the optimal diagnostic sequence for suspected androgen-secreting tumors.
Biochemical testing must precede advanced imaging. Serum testosterone localizes production primarily to the ovaries, while dehydroepiandrosterone sulfate (DHEAS) localizes production to the adrenal glands.
Imaging (like an abdominal CT) without biochemical guidance may result in unnecessary radiation or miss small, occult ovarian tumors that require surgical exploration or specialized pelvic MRI.

Anahtar Kavram

Evaluation of rapid-onset virilization and hyperandrogenism in adult females
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Konular

Reproductive Endocrinology and Infertility

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