Case Report of Concomitant Pleuropulmonary Blastoma and Hepatoblastoma in a 25-Month-Old Child With a Germline DICER1 Pathogenic Variant.

Pleuropulmonary blastoma and hepatoblastoma are 2 well-recognized embryonal tumors of the thorax and liver respectively occurring in children. The simultaneous presentation of 2 or more pediatric embryonal tumors in the same patient is extremely rare. Specifically, cases of concomitant pleuropulmonary blastoma and hepatoblastoma in the same patient are extremely rare with only a single clinical case report published thus far. We report a case of a 25-month-old boy presenting with concomitant pleuropulmonary blastoma and hepatoblastoma, and describe the clinical, imaging, and histopathological findings. We additionally describe the underlying DICER1 alterations in both tumors. This is the first case described in Vietnam and only the second such case reported globally.