TY - RPRT TI - Congenital peripheral primitive neuroectodermal tumor refractory to treatment. AU - Mohammed El Hayek AU - Omar Trad AU - Sherief Islam PY - 2004 DO - 10.1097/00043426-200411000-00018 UR - https://pubmed.ncbi.nlm.nih.gov/15543017/ ID - 15543017 ER -