Muscular Hydatidosis Cyst Relapse - Abstract
Hydatidosis is a worldwide spread zoonoses caused mainly by the Echinococcus granulosus, where humans become the intermediary host through contact with a definitive host (commonly a dog) or through intake of food or water contaminated with Echinococcus eggs. Clinically speaking it usually presents itself as a hydatid cyst often developed in the liver due to the fact that it is where it reaches first through portal circulation. In order to reach other organs like the muscle it will still need to surpass the pulmonary filter.
We report a case of muscular hydatidosis relapse in a 63 years-old male patient, with a history of hydatid cyst resection in left thigh 10 years ago, presenting a new tumor in the same region with 5 years of progressive growing evolution. Soft parts ultrasound (US) shows oval lesions with ecogenic content and a daughter vesicules on the inside. Abdominal ultrasound and CT scan show two rounded hypodense images, one in segment IV and another one in segment VII, which confirm we are dealing with simple cysts. We perform a full surgical excision of the lesion. Histologic analysis reveals a hydatid cyst with intra and pericystic foreign body granulomatous reaction.
The suspicion of muscular hydatidosis is crucial when we come across a progressively growing bland parts mass in a hydatidosis endemic area. A correct presurgery diagnosis will avoid inadequate treatment that enables recurrence.