Short Stature on a Boy: Mosaicism with an Isodicentric Y Chromosome

Figure 4

External masculinization score (EMS) based on the position of the gonads, length of the phallus, presence of scrotal fusion, and position of the urethral meatus. Y: yes; N: no; Norm: normal; Glan: glanular; Pen: penile shaft; Pe: perineal; Scro: scrotal sac; Ing: inguinal; Abd: abdominal; Abs: absent (adapted from Brook’s Clinical Pediatric Endocrinology).