Myiasis associated with an invasive ductal carcinoma of the left breast: case study

ABSTRACT Most breast cancers originate in the ductal epithelium and are referred to as invasive ductal carcinoma. In this study we report on the clinical procedures adopted to diagnose myiasis in association with infiltrating metastatic breast carcinoma in a female patient. A 41 years old woman came to the Federal Hospital of Andaraí complaining of intense itching, warmth, redness and hardening of the breast, which had acquired the aspect of an orange peel. A lesion in the left breast was cavitated, dimpled, had fetid odor, and had fibrotic and infected air nodules filled with exudate and Dipteran larvae. The tissue was cleaned and 33 larvae were extracted. The patient was hospitalized and received Ivermectin. Eighteen of the larvae extracted from the patient were placed in 70% alcohol, and twelve were placed in a container with sterile wood shavings under controlled conditions until they metamorphosed into adults. The taxonomic identification of the flies revealed that the culprit was Cochliomyia hominivorax. A histopathological exam conducted three months earlier had revealed infiltrating ductal carcinoma. Two months after the myiasis treatment, the breast tissue had healed. The patient had waited ten days from the onset of the myiasis to seek treatment, and that delay interfered negatively in the prognosis of both the neoplasm and the myiasis. This study is relevant to public health in view of the strong social impact of myiasis.

Cisticercose da mama / Cysticercosis of the breast

A cisticercose é uma doença infecciosa, endêmica em alguns países, que pode acometer qualquer órgão, sendo muito rara na mama. Foram encontradas apenas 21 casos descritos na literatura no período de janeiro de 1966 a novembro de 2001. Os autores relatam um caso de uma mulher de 29 anos que procurou o serviço de mastologia com tumoração indolor na mama direita. O exame anatomopatológico da peça revelou escoléx de Taenia solium. São discutidas as características macro e microscópicas da cisticercose na mama, correlacionando este caso com os outros 21 descritos.

Cysticercosis is an infective disease, endemic in some countries, that many invade any organ, but the breast location is rare. A case of cysticercosis of the breast in a 29-year-old woman is reported. Clinical examination revealed a painless, well delimited, mobile nodule measuring 2,5cm in diameter. The clinical and histological aspects of the cysticercosis of the breast are discussed considering 21 cases described in the literature from 1966 to 2001, comparing to this new one.

Cisticercosis mamaria / Breast cysticercosis

Se presenta el caso clínico de una paciente de 51 años, ingresada al Servicio de Ginecología del Hospital Van Buren de Valparaíso, con el diagnóstico de tumor mamario derecho, observación: cáncer de mama inflamatorio, a la cual se procedió a efectuar una cuadrantectomía mamaria, enviándose la pieza operatoria a estudio, revelando posteriormente la histopatología la presencia de un cisticerco (Cisticerco. Forma larvaria del parásito Taenia Solium) rodeado de reacción inflamatoria en la glándula mamaria. Se presenta este caso clínico por su extrema rareza, al ser ésta una ubicación no descrita anteriormente en los casos de esta histoparasitosis. Se investigó otras posibles localizaciones de cisticercosis, estudio que resultó negativo