Accidental intramuscular overdose administration of vincristine.

Vincristine (VCR) is a fundamental component of various chemotherapy protocols. Several reports of accidental intramuscular (i.m.) administration or overdose of VCR have been published in the medical literature. We report on an uneventful clinical course of both i.m. and overdose of VCR in a 6-year-old girl with Wilms' tumor. To prevent the administration of overdosed drug by the i.m. route accidentally, chemotherapy should be administrated only by experienced medical doctors.

Diffusion-weighted magnetic resonance is better than polymerase chain reaction for early diagnosis of herpes simplex encephalitis: a case report.

Herpes simplex virus infection of the central nervous system is still a significant cause of morbidity and often mortality. Early diagnosis is critical because treatment with the antiviral drug acyclovir dramatically decreases morbidity and mortality in children. The use of polymerase chain reaction techniques is a diagnostic procedure in herpes simplex virus infection, but negative polymerase chain reaction test results of cerebrospinal fluid herpes simplex virus can occur within the first 72 hours of illness, with subsequent test results becoming positive as in this case. Therefore, diffusion-weighted magnetic resonance may play a major role as a first and early diagnostic step.