An unusual presentation of alveolar echinococcosis in a 12-yr-old immunocompetent child.

AE is a parasitic disease caused by Echinococcus multilocularis (E.m.). AE is a rare form of echinococcosis and mostly seen in 50- to 70-yr-old patients. Its asymptomatic invasive tumor-like lesion development period, which lasts as much as 20 yr, is too long. Hence, this disease is very rare in children. Herein, we report an AE in a 12-yr-old girl who was not eligible for surgical treatment because of a radiological evaluation of non-resectable lesion and was scheduled for a LT.