[Primary eosinophilic colitis in a celiac patient]. / Colitis eosinofílica primaria en paciente con enfermedad celíaca.

Primary eosinophilic gastrointestinal disorders include a spectrum of inflammatory chronic diseases in which eosinophils infiltrate the gut in the absence of known causes of such tissue eosinophilia. They may affect any area of the gastrointestinal tract although exclusive colonic disease is exceptional. Due to their low prevalence these disorders are not usually taken into account when making a differential diagnosis in a patient with chronic diarrhea, which is the reason why in many cases the diagnosis can take many years. We describe the case of a patient with well-controlled celiac disease and chronic diarrhea of indeterminate origin. The final diagnosis was eosinophilic colitis. A complete response was obtained when she was treated with oral budesonide. Nowadays she remains asymptomatic.

[Cystic tumors in the retrorectal space. Do these two cases have something in common?]. / Tumoraciones quísticas del espacio retrorrectal. ¿Tienen algo en común estos dos casos?

Cystic lesions in the retrorectal or presacral space present a broad differential diagnosis. Rare but typical lesions at this site are those related to embryonic development, which are the most frequent presacral congenital lesions in adults. Amongst these tumors, epidermoid cysts and cystic hamartomas are the most common lesions. Cystic masses, which are asymptomatic in approximately 50% of the cases at diagnosis, may show complications such as infection or malignant degeneration. Initial diagnosis is based on imaging techniques although definite lesion characterization, essential due to their malignancy risk, is given by the pathological analysis of the surgical piece.