[Anaplastic large cell lymphoma. Report of an unusual case].

An anaplastic large cell lymphoma which fulfills all the criteria required for its inclusion among the soft tissue forms is reported. We point out in this case, in addition to its low frequency in adults, the severe systemic involvement of the disorder with out generalization, the lack of expression of the ALK1 protein, frequently positive in the generalized forms and the absence of response to polichiomiotherapy. We think that this case emphasizes the heterogenicity if the disorder on the clinical pathologycal relation ship of this kind of lymphomas.

[A case of pulmonary sarcoidosis induced by interferon alfa treatment in a female patient with hepatitis C].

In spite of the generalized use of alpha interferon to treat hepatitis C there are very few cases in the literature on pulmonary sarcoidosis due to this therapy. A new case with this diagnosis is reported and the possible pathogenic mechanisms driving alpha interferon to sarcoid histologic changes are discussed.

Iliac arteriovenous fistula secondary to iliac aneurysm rupture associated with pulmonary embolism and anuria.

We present a case of iliac aneurysm rupture that started with high-output cardiac failure and anuria and later presented as a pulmonary embolism that needed a preoperatory filter for the cava vein.

[Incidence of primary gastric lymphoma and H. pylori infection in the central zone of Asturias].

Objective: We review our experience with primary gastric lymphomas type B of low (MALT) and high grade in a population of 366,635 people during 4 years and after performing 9,268 gastroscopies.

Results: The incidence of these lymphomas in our medium is similar to that found in the world population. Possible disagreements among the biopsy histology and that of the subsequent gastrectomy samples is pointed out.