| Abstract
Hydatid cyst disease is one of the zoonoses caused by the larval stage of Echinococcus granulosus,
mostly involving the liver and the lungs; but its complications can be seen in every site and
organ. Sometimes it can cause suspicious and complicated cases that mimic malignancy. For
instance, axillary involvement of hydatid cyst is very rare. It is important to differentiate hydatid
cyst disease from cancer, since it may show malignant features when pulmonary or other distant
organ involvement takes place. In this study, we present a case of multiple masses in the lungs
and the axillary region in a 48-year-old woman. The ultrasonography was unable to detect
hydatid cysts. Biological values were normal except for serum sodium (Na) and potassium (K);
and enzyme-linked immunosorbent assay (ELISA) test was negative. Hydatid cyst was diagnosed
while taking a biopsy from the axillary tumor. |