Abstract
We present the clinical case of a 36-year-old male patient, who was taken to the operating room with the diagnosis of intestinal occlusion and eosinophilia. The intraoperative findings were nonspecific, so a positive test for Morera was performed for Angiostrongylus costaricensis. This parasitosis causes intestinal occlusion with low frequency. In our country, it must be included in the list of abdominal pain, both acute and chronic, moreover, if it associates marked eosinophilia.