Case Report of Concomitant Pleuropulmonary Blastoma and Hepatoblastoma in a 25-Month-Old Child With a Germline <i>DICER1</i> 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 <i>DICER1</i> alterations in both tumors. This is the first case described in Vietnam and only the second such case reported globally.