Chromosome 7 short arm deletion, 7p21----pter.

A case report of a de novo deletion in the short arm of chromosome 7 is presented (46,XX,del(7)(p21----pter)). The five-month-old girl's major symptoms are: trigonocephalus with craniosynostosis, median bony forehead bulge, high palate, atrial septal defect, anal atresia and perineal fistula, thumb insertion far to ulnar-proximal, and a slightly retarded psychomotor development. The other cases with monosomy 7p described in the literature are reviewed.