[OROPHARYS CANCER: THE SQUAMOUS CELL]. / CÁNCER OROFARINGEO: LA CÉLULA ESPINOSA.

The Diffuse Large B-Cell Lymphoma is the most frequent non Hodgkin Lymphoma. The role of CT/PET in this relatively homogeneous group of lymphomas is controversial. It rarely changes the management of the patients in the initial staging. Recents publications, clinical trials and experts consensus meetings have demonstrated its utility in the evaluation of the response at the end of the treatment. The interest of CT/PET in the evaluation of the response during the treatment, with the objective of implement a "Risk Adapted Therapy", in increasing.

[Giant cell in maxillary pseudotumors]. / La célula gigante en los seudotumores maxilares.

A research on lesions apparently tumorous that appear on jawbones and are not exactly tumors is developed. These lesions are clinically silent, although they produce deformity and, perhaps because of that, an early diagnosis with biopsy or other procedures is needed. The image research can be very characteristic or otherwise, it can be very complex, non specific and not provide everything expected to make the diagnosis. The difference between radiolucent and radiopaque images that produce the querubism-fibrous displasia, prove both extremes in which the diagnosis judgment made by image can or cannot be significant. We have to highlight the presence of giant cells with an osteoclastic nature in most of these pseudo tumorous lesions.

[The cancer of parotid gland]. / El cáncer de parótida.

We have studied malign tumours of major and minor salivary glands, analyzing the possible etiologic factors in relation to their glandular histological structure (specially in parotid). Classifications have been reviewed, personal in 1971, Armed Forces Institute of Pathology in 1974 and the current one proposed by International Agency for Research on Cancer in 2004. Finally, we analyzed new typified tumours also the tumours with variable biological and clinical behaviour.