Androgen insensitivity syndrome physical examination

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Physical Examination

Abdomen

• A lump in the inguinal canal is discovered to be a testis - in complete androgen insensitivity syndrome (CAIS).
• Mild differences in the genital structure is found in partial androgen insensitivity syndrome (PAIS).
• Phallus is smaller than a typical penis but larger than a typical clitoris. The labioscrotal folds are almost but not completely fused in the midline of the perineum, producing a small perineal pouch termed a "pseudovagina". Instead of being on the tip of the phallus, the urethra remains in this pseudovagina of the perineum (a position termed a 3rd degree hypospadias). The labioscrotal skin flanking the pseudovagina remains less prominent than labia but less thinned, rugated, and fused than a scrotum. The testes usually remain in the abdomen but occasionally can be felt in the inguinal canal. This genital configuration has traditionally been referred to as a pseudovaginal perineoscrotal hypospadias (PPSH) and can occur in other intersex conditions. - in Reifenstein syndrome

Variants of Reifenstein syndrome occur with greater or less androgen sensitivity and correspondingly more or less genital masculinization. The common feature is that they have enough ambiguity that they are not simply assumed to be normal female infants, as is usual in CAIS and PAIS.