Catatonia associated with pediatric postoperative cerebellar mutism syndrome.

Objective: To ascertain the presence of catatonia in cases of pediatric postoperative cerebellar mutism syndrome (PPCMS).

Method: A systematic review of PPCMS case reports of patients aged 0-17 years with sufficient clinical information to extract catatonic phenomena was undertaken following PRISMA guidelines. Standardized catatonia rating scales were applied to selected cases retrospectively to ascertain whether diagnostic criteria for catatonia were met.