Ovarian stromal hypertrophy in hyperandrogenic women

Area of Science:

• Reproductive Endocrinology
• Medical Imaging
• Ovarian Physiology

Background:

• Vaginal endosonography identifies ovarian stromal hypertrophy in polycystic ovarian syndrome (PCOS) and related states.
• Subjectivity in visual assessment of ovarian structure limits quantification and correlation with clinical findings.
• Objective measurement of ovarian stromal hypertrophy is needed for improved diagnostic accuracy.

Purpose of the Study:

• To evaluate computer-assisted analysis of ultrasound scans for objective measurement of ovarian structure and size.
• To quantify ovarian stromal hypertrophy and correlate it with hormonal profiles in hyperandrogenic states.

Main Methods:

• A computer-assisted method was employed to analyze ultrasound scans of ovarian morphology.
• Selective calculation of stromal area was achieved by subtracting cyst area from total ovarian area on longitudinal sections.
• Study included 57 patients with hyperandrogenism, 17 with hypothalamic anovulation, and 20 controls.

Main Results:

• Computerized analysis revealed that 75% of hyperandrogenic patients exhibited bilateral stromal area exceeding 2 standard deviations above the mean of controls.
• Patients with hypothalamic anovulation showed stromal areas below this threshold.
• Stromal area positively correlated with serum delta 4-androstenedione and 17 alpha-hydroxyprogesterone levels in hyperandrogenic patients.

Conclusions:

• Ovarian stromal hypertrophy is a frequent and specific feature of hyperandrogenism, correlating with ovarian androgenic dysfunction.
• The presence of stromal hypertrophy is not consistently associated with elevated luteinizing hormone (LH) levels.
• Further research is required to clarify the roles of insulin and ovarian growth factors in this condition.