Proximal femoral focal deficiency revisited: a case report.

Proximal femoral focal deficiency (PFFD) is a rare anomaly with an estimated incidence of < 0.2/ 10,000 births. The aetiology of PFFD is unknown though various agents have been implicated including anoxia, ischaemia, mechanical or thermal injury. Herein is reported a case of a 22-year-old primigravida who delivered a baby with PFFD. This patient had developed high grade fever and had undergone ischiorectal abscess drainage at 7 weeks of gestation; maternal hyperthermia combined with anoxic injury might have been contributory factors in the causation of this disorder. So, it is of prudent importance to do prenatal targeted ultrasonography in patients who develop febrile illness in early pregnancy.