📘 Chapter 628.2 · 46,XY Disorders of Sex Development (DSD)

Nelson Textbook of Pediatrics 22nd Edition | Undervirilized male. Causes: androgen synthesis defects (5α-reductase type 2, 17β-HSD), androgen action defects (complete/partial androgen insensitivity, CAIS/PAIS), gonadal dysgenesis (Swyer, mixed), Leydig cell hypoplasia. Diagnosis: hCG stimulation test, testosterone/DHT ratio, AMH, genetic testing.

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📋 30 Clinical Scenarios — 46,XY DSD (FCPS level)

📇 High‑Yield Review Cards: 46,XY DSD

🩺 Symptom‑Based Approach: 46,XY DSD

Select a presentation for diagnostic clues.

📋 Stepwise Management of 46,XY DSD (Nelson Ch 628.2)

    ⚡ Reflex Prompts — Clinical Decisions in 46,XY DSD

    📖 Summary: 46,XY DSD — Nelson 22nd Ed