# MRKH Syndrome: Uterovaginal Aplasia & Ovarian Function
> Explore clinical findings, embryology, and management of Müllerian agenesis (MRKH), including primary amenorrhea diagnosis and neovagina creation methods.

Tags: mrkh-syndrome, mullerian-agenesis, reproductive-endocrinology, primary-amenorrhea, gynecology, embryology, karyotype-46xx
## Clinical Overview: Müllerian Agenesis Spectrum
*   Focus on anatomical findings, physiology, and genetic profile.
*   Presented by the Department of Reproductive Endocrinology & Infertility.

## Anatomical Defect: Uterine & Vaginal Aplasia
*   **Uterine Aplasia:** Complete absence of the uterus and cervix.
*   **Vaginal Finding:** Absence of the upper 2/3 of the vagina; shortened vaginal pouch (2-4 cm depth).
*   **Etiology:** Failure of Müllerian ducts to fuse during embryogenesis.

## Embryology: Müllerian Dysgenesis
*   Developmental arrest occurs at approximately 7 weeks of gestation.
*   Results in rudimentary uterine horns (cornua) or complete absence.

## Physiology: Normal Ovarian Function
*   Ovaries are embryologically distinct and functional.
*   **Normal Folliculogenesis/Ovulation:** Regular hypothalamic-pituitary-gonadal axis activity.
*   **Endocrine Profile:** Normal levels of FSH, LH, Estradiol, and Progesterone.

## Clinical Exam: Secondary Sexual Characteristics
*   Normal female phenotype.
*   **Thelarche:** Normal breast development (Tanner Stage 4-5).
*   **Pubarche:** Normal pubic and axillary hair distribution.

## Genetic Profile: Normal Karyotype (46,XX)
*   Distinguishes MRKH from Androgen Insensitivity Syndrome (46,XY).
*   Genetic sex matches phenotypic sex.

## Clinical Presentation: Primary Amenorrhea
*   **Incidence:** 1 in 4,500 female births.
*   **Symptoms:** Absence of menarche by age 15-16, coital difficulty.
*   **Pain:** Cyclic pelvic pain is usually absent unless functional uterine remnants exist.

## Concomitant Anomalies
*   **Renal:** 30-40% (e.g., unilateral renal agenesis, horseshoe kidney).
*   **Skeletal:** ~12% (e.g., scoliosis, Klippel-Feil syndrome).

## Management: Neovagina Creation
*   **First Line:** Frank's Method (dilator therapy) with >90% success rate.
*   **Second Line:** Surgical Vaginoplasty (McIndoe, bowel, or Vecchietti procedures).
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