[Primary pancreatic lymphoma clinically mimicking carcinoma. An important differential diagnostic problem due to the different therapeutic implications].

Primary pancreatic lymphoma is very rare; the most commonly described subtype is diffuse large B-cell lymphoma. Although it is morphologically similar to lymphoproliferative lesions found in other locations, clinically it can mimic an epithelial neoplasm. The differential diagnosis is important due to the different therapeutic implications of each entity.

Biliary growth of colorectal liver metastasis: case report and review of the literature.

Introduction: Intrabiliary growth of colorectal liver metastasis determines their capability of dissemination and relapse.

Case Report: 65-year-old woman underwent sigmoidectomy (2011) and left hepatectomy due to liver metastases affecting the bile tract (2014). In 2020 she developed a 2cm tumour in the union of both hepatic ducts.

Colostomy stenosis due to chronic radiation enteritis. Report of clinical case.

Antecedentes: La colitis actínica es una endarteritis obliterante ocasionada por exposición a radiación ionizante. Se manifiesta de manera aguda (primeras semanas) o crónica (hasta 30 años después).

Caso ClÍnico: Paciente tratado por neoplasia rectal mediante quimiorradioterapia y amputación abdominoperineal.

[IgG4 related disease with exclusive sinonasal involvement: A case report and literature review].

IgG4 related disease (igG4-RD) is a pathological process which integrates a large number of diseases of unknown pathogenesis, considered as being exclusive to many different organs. Diagnosis is established through histological, radiological and serological criteria. Treatment is based on long term corticosteroids; rituximab being used only in refractory cases.