[Metastatic collision tumour. A case report]. / Tumor metastásico de colisión. Informe de un caso.

BACKGROUND: Collision tumours are extremely rare. They are defined by the presence of two tumours of different histological origin in the same organ. CLINICAL CASE: A 71 year old female with history of a carcinoid tumour removed 20 years ago without any recurrence. The patient was admitted with intestinal occlusion symptoms secondary to a right flank abdominal tumour. An exploratory laparotomy was performed, removing the tumor and applying optimal debulking. The histopathological study reported bilateral ovary adenocarcinoma, as well as metastatic collision tumour of two histological types: well differentiated adenocarcinoma and a mixed malignant mesodermic Mullerian tumor. The patient was treated with adjuvant chemotherapy with poor results (death in 24 months). CONCLUSIONS: The presence of collision tumours is extremely rare. There are no statistics or specific treatment reported. Diagnosis is made with histopathology. At the moment, no similiar cases have been reported.

[Churg-Strauss abdominal manifestation]. / Churg-Strauss manifestación abdominal.

BACKGROUND: Churg-Strauss is a rare, idiopathic, hypereosinophilic disease characterized by blood, tissue, and systemic vasculitis in patients with a history of asthma or allergic rhinitis. Gastrointestinal manifestations of Churg Strauss appear in a 31-45% of the patients according to some series of studies, abdominal pain being the most frequent symptom followed by diarrhea and bleeding. CLINICAL CASE: Male patient with a history of asthma who presents abdominal pain apparently due to acute appendicitis. During the hospital stay the study protocol is complemented, confirmating the diagnosis of Churg Strauss syndrome with intestinal manifestations. CONCLUSION: Churg Strauss syndrome is a rare vasculitis that may present with intestinal manifestations so it is important to take into consideration the differential diagnosis. There are few cases in the literature associated with this syndrome and acute abdomen, all of them on the poor prognosis of this association.

Antecedentes: la enfermedad de Churg-Strauss es poco común, idiopática, caracterizada por hipereosinofilia en sangre y tejidos, aunada a vasculitis sistémica en pacientes con antecedentes de asma o rinitis alérgica. Las manifestaciones gastrointestinales del síndrome de Churg Strauss se caracterizan por dolor abdominal, seguido de diarrea y hemorragia en 31-45% de los casos. Caso clínico: paciente masculino con antecedente de asma que acudió a consulta por abdomen agudo con probable apendicitis aguda; durante el protocolo de estudio se diagnosticó síndrome de Churg Strauss, con manifestaciones intestinales. Conclusión: el síndrome de Churg Strauss es una vasculitis poco frecuente que puede manifestarse con síntomas intestinales, como en este caso; es importante tenerlo en mente a la hora de los diagnósticos diferenciales. Existen pocos reportes con este síndrome asociado con abdomen agudo, todos ellos con mal pronóstico.