Herpes simplex encephalitis during chemoradiation therapy in nasopharyngeal cancer patient
Aisha AlDowihi, Manar Alotaibi and Farah AlEissa
King Fahad Specialist Hospital, Saudi Arabia
: J Spine Neurosurg
Abstract
Herpes Simplex Encephalitis (HSE) is a catastrophic disease with high mortality and serious neurological disabilities. Immunosuppressive state may increase the risk of developing HSE. HSE might exhibits atypical manifestations in immunocompromised patients. Brain radiotherapy (RT) has been reported to increase susceptibility to HSE, since brain RT disturb the blood-brain barrier. Here, we report a case of atypical HSE presentation in a 52 years old male with nasopharyngeal squamous cell carcinoma who was treated with concurrent chemoradiation. During his treatment period, he has pancytopenia, fever, altered level of consciousness and focal seizure, his MRI showed abnormal signal intensity in the left temporal lobe, EEG revealed left lateralized periodic discharges. Cerebrospinal fluid examination showed few neutrophilic predominant cells and positive polymerase chain reaction for herpes simplex virus-1. Acyclovir was initiated for 3 weeks and the patient had a good clinical course with few neurologic sequelae. HSE is a rare but potentially fatal possible finding in patient with NPC during or after local radiation and chemotherapy.