Fig. 1. Dysmorphic features of the 13q deletion syndrome showing the flat broad nasal bridge, bulbous tip of the nose, low set ears, and prominent eyebrows. A. (Case #1) Sixteen-month-old child with manifested developmental delay and characteristic facies of 13q deletion syndrome. B. (Case #1) Unilateral retinoblastoma was later discovered in this patient. The tumor was successfully treated with plaque radiotherapy.