Infestación ocular por plerocercoide de Spirometra mansonoides: primer reporte en el Perú

Abstract

La plerocercoidiosis es una zoonosis parasitaria producida por la larva plerocercoide de Spirometra. Esta larva migra por el tejido de la pared intestinal, mediante la ruta subcutánea y puede llegar a diferentes áreas del cuerpo humano como la cabeza, el cerebro y la órbita ocular. Se reporta el caso de un varón de 45 años procedente de la Amazonía peruana, quien presentó ardor asociado con edema y hemorragia conjuntival en el borde ocular externo del ojo derecho, durante once meses. Se observó un helminto localizado en la cavidad orbitaria derecha, el cual se extrajo y por estudios morfológicos e histopatológicos se identificó como Spirometra mansonoides de localización ocular el que se reporta por primera vez en el Perú.

Four Case Reports of Cutaneous Sparganosis From Peruvian Amazon

“…7 The most common species of Spirometra found in China, Japan, and Southeast Asia include S. mansoni , whereas in the Americas, it is S. mansonoides . 4 A more aggressive course is associated with infections with Sparganum proliferum , causing proliferative sparganosis; in such cases, massive infection with numerous larvae is the rule, and mortality is quite common. 8 Multiplication in this particular species appears by transverse fission.…”

“…When humans are infected, the larvae tend to migrate to subcutaneous tissues, muscle, breast, pleural cavity, lungs, urogenital viscera, abdominal viscera, or the central nervous system. 4,9…”

“…When humans are infected, the larvae tend to migrate to subcutaneous tissues, muscle, breast, pleural cavity, lungs, urogenital viscera, abdominal viscera, or the central nervous system. 4,9 The most common clinical presentation is a mobile, slow-growing, mostly fixed but occasionally migratory, subcutaneous nodule or mass with a diameter of 0.5-5 cm, which is often confused with benign growths such as fibromas, lipomas, or cysts. The lesion itself may be erythematous, and it can be itchy or painful.…”

“…Only sporadic cases have been reported in South America, Europe, and Africa. [2][3][4] A patient with ocular infection by Spirometra mansonoides was described in Peru in 2015. 5 Here, we report 4 cases of cutaneous sparganosis in patients, all who had a history of visiting or living in the Peruvian Amazon region.…”