Abstract
The incidence of cytomegalovirus (CMV) retinitis in the pediatric allogeneic hematopoietic stem cell transplant (HSCT) population is unknown. We report a cluster of 5 pediatric patients with CMV retinitis diagnosed in a 12-month period and compare this to the rate of CMV viremia and retinitis in the 4 years prior. Presented is the ophthalmic screening protocol developed in response to this experience. Retrospective cross-sectional study. A retrospective chart review was performed on patients at Children's Hospital of Colorado (CHCO) who received allogeneic HSCT between January 2010 and December 2014. Fisher exact test was used to compare the proportion of CMV viremia and CMV retinitis in patients transplanted between January 2010 and December 2013 with those transplanted in 2014. A total of 101 patients underwent allogeneic HSCT from January 2010 to December 2013; 32 (32%) tested positive for CMV viremia. No cases of CMV retinitis were identified. From January 2014 to December 2014, 28 patients underwent allogeneic HSCT; 13 patients (46%) had CMV viremia, not a statistically significant increase (P= .18). There were 5 cases of CMV retinitis diagnosed in those transplanted in 2014, a statistically significant increase compared with those transplanted in 2010-2013 (P= .0004). A multidisciplinary team was formed to review the literature and an ophthalmic screening protocol was developed. Our recent cluster of CMV retinitis in pediatric allogeneic HSCT patients may suggest a rise in incidence of CMV retinitis. We propose an ophthalmic screening protocol to diagnose retinitis in pediatric HSCT patients in the early, often asymptomatic stage.
Published Version
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