A Pediatric Radiology Textbook and Pediatric Radiology Digital Library
Hypervitaminosis A
Etiology: Overdose of Vitamin A
Imaging Radiograph: — Cortical thickening most commonly involves ulna and metatarsals followed by clavicle and then tibia and fibula — Premature fusion of epiphyses — Takes weeks to months to resolve radiographically
DDX: Infantile cortical hyperostosis which involves most commonly mandible and clavicle and ulna
Complications:
Treatment:
Clinical:
Radiology Cases of Hypervitaminosis A
AP radiograph of the bilateral femurs (above) shows diffuse periosteal reaction along the lateral borders of the femoral diaphyses, left greater than right. Lateral radiograph of the forearm (below) shows dense periosteal reaction along the posterior aspect of the ulna.
