Metástasis mamaria de un adenocarcinoma mucinoso de colon: descripción de un caso y revisión de la literatura / Breast metastasis from mucinous adenocarcinoma of the colon: a case report and review of the literature

Objetivo. Determinar las características de las metástasis mamarias colorrectales para realizar un diagnóstico diferencial y un tratamiento adecuados. Caso clínico. Se presenta un caso de metástasis mamaria de un adenocarcinoma mucinoso de colon y se realiza un análisis de las características patológicas, radiológicas, de localización, latencia y supervivencia de los otros 34 casos publicados en la literatura. Resultados. La edad media al diagnóstico es de 53,3 años. Son tumores avanzados (el 48% en estadio C de Dukes y el 24% en estadio D) y el 75%, asociados a enfermedad metastásica difusa. Existe disparidad en el tratamiento realizado; en 12 no se realiza cirugía, en 7 se trata solo la lesión y en 4 casos más se estadifica también la axila. Conclusiones. Las metástasis en la mama de un primario de colon es una afección a tener en cuenta en el diagnóstico diferencial de las tumoraciones mamarias. La imagen radiológica características es una masa mamaria bien definida sin microcalcificaciones. El uso de citoqueratina 7 y 20 y los anticuerpos CDX2 y mamoglobina permiten diagnosticar el origen de la tumoración. El tratamiento debe ser individualizado y llevado a cabo por un equipo multidisciplinar, ya que en el caso de metástasis única no debe ser considerada una enfermedad diseminada (AU)

Objective. To determine the characteristics of breast metastasis of colorectal origin in order to aid suitable differential diagnosis and treatment. Case report. We present a case of breast metastasis from a mucinous colon adenocarcinoma and describe the pathological and radiological characteristics, location, latency and survival of the other 34 cases reported in the literature. Results. The mean age at diagnosis was 53.3 years. The tumours were typically advanced (Dukes stage C in 48% and stage D in 24%) and 75% were associated with metastatic disease in other locations. There was wide disparity in the treatment provided; surgery was not performed in 12, only the lesion was treated in 7, and the axilla was also staged in 4. Conclusions. Metastases to the breast from a primary colon cancer is rare but should be considered in the differential diagnosis of mammary tumours. The radiological image is a well-defined breast mass usually without microcalcifications. Currently, the use of cytokeratin 7 and 20, CDX2 monoclonal antibodies and mammaglobin allows clear differentiation of the origin of the tumour. Treatment must be individualized and undertaken by a multidisciplinary team, because, in the case of single metastasis, they should not be considered a widely disseminated disease (AU)

Hantavirus pulmonary syndrome in Anajatuba, Maranhäo, Brazil

The authors report a confirmed case of hantavirus pulmonary syndrome in the rural area of the municipality of Anajatuba, state of Maranhäo. Two other suspected cases from the same region are also described. The confirmed case involved a previously healthy young woman who died with signs and symptoms of acute respiratory insufficiency 5 days after presenting fever, myalgia and a dry cough. The patient was a student who was helping her parents with work in the fields; it was a habit of the family to store rice inside the house. The suspected cases involved two first-degree relatives working as field hands who died of acute respiratory insufficiency 24 and 48 hours, respectively, after presenting fever, myalgia and a dry cough. Both stored rice and corn inside their home. People living in the region reported massive infestations with rats in the woods and fields