La malrotación intestinal es una anomalía congénita de la rotación y fijación intestinal, diagnosticada de forma infrecuente en la edad adulta. Se presenta un caso de malrotación intestinal en un paciente adulto previamente asintomático con cambios en el hábito intestinal en los últimos 6 meses al que se le realiza una colonoscopia ambulatoria con la evidencia de un pólipo en el ciego, posterior a su resección presenta dolor a ierda que permite la realización de estudios imagenológicos que confirman el diagnóstico.

Eosinophilic gastroenteritis (EG) is a rare entity. We report a 55-year-old man had no previous atopy or allergic history, who presented abdominal pain and vomiting. Abdominal computed tomography and endoscopy ultrasonography demostrated gastric wall thickening with wall thickening of the superior duodenum, without defined mass or fluid collection. Gastrointestinal endoscopy confirmed thickening of prepyloric folds and superior duodenum with luminal stenosis. Parcial gastrectomy was performed due to absence of definitive diagnosis and suspicion of possible malignancy and diagnosis of gastric outlet obstruction. Histopathology was compatible with EG, treated with an 8-week long howed clinical improvement, weight gain and normalization of eosinophil count on peripheral blood.