Squamous cell carcinoma of the oral cavity: a follow up study of 85 cases and analysis of prognostic variables

We have studied clinical and morphological variables of 85 patients with squamous cell carcinoma of the oral cavity. After a follow up which varied between 2 months and 6 years, we carried out an analysis of the survival rate, and obtained significant differences (p<0.05) for the Breslow and Mantel-Cox tests in relation to the clinical stage, size and presence of lymphadenopathy. Furthermore we have carried out a predictive-prognostic statistical analysis through a multiple regression study, from which we have concluded that the size of the lesion and the number of peritumoral eosinophils were the variables with prognostic significance with respect to the survival rate of the patients. Furthermore, once the variables in relation to the incidence of relapse were analyzed, we found that the size, the presence of lymphadenopathy, the number of peritumoral eosinophils and the number of mitoses were those variables considered to be of the greatest prognostic value.Nous avons étudié les caractères cliniques et morphologiques de 85 cas de carcinome épidermoide de la cavité orale. Après un suivi de 2 mois à 6 ans, nous avons réalisé une analyse du taux de survie. Nous avons constaté des différences significatives (p< 0,05) concernant les tests de Breslow et Mantel Cox, en relation avec le stade clinique, la taille de la tumeur et l’existence d’adénopathies.Ensuite nous avons effectué une analyse statistique à l’aide d’une étude de régression multiple, qui nous a permis de conclure que la taille de la lésion et le nombre d’oesinophiles péritumoraux sont des variables dont le pronostic significatif est en rapport avec le pourcentage de survie des patients.Une fois analysées les variables en relation avec les incidences de rechute, nous avons observé que la taille de la tumeur, l’existence d’adénopathies et le nombre de mitoses sont les variables de plus grande valeur pour le pronostique

Oral lichen planus and diabetes mellitus. A clinico-phatological study

A study was made of 72 patients with oral lichen planus associated (n = 28) or not with diabetes mellitus (n = 44). No significant differences were observed between both groups in terms of the location of the lichen planus lesions on the buccal mucosa, palate, gums or floor of the mouth. On the other hand, the diabetics exhibited a greater frequency of oral lichen planus on the tongue. Atrophic-erosive lesions were more common in patients with lichen planus associated with diabetes. Finally, no differences were observed between the two groups in terms of absolute inflammatory infiltrate in the connective tissue of the oral lichen planus lesions.Nous avons effectué une étude sur deux groupes de patients atteints de lichen plan buccal, le premier associé au diabètes sucré (N = 28) et le second (N = 44) sans cette association. Nous n’observons pas de différences significatives entre eux, en ce qui concerne la localisation du lichen plan dans la muqueuse buccale, le palais, les gencives ou le plancher bouche. Nous trouvons cependant une plus grande fréquence de la localisation au niveau de la langue dans le lichen plan avec diabètes. Mais en même temps, nous détectons une fréquence plus importante de lésions atrophiques-érosives dans le premier groupe que dans le second.En dernier lieu, il n’existe pas de différences entre les deux, en ce qui concerne la quantité, en valeur absolue, de l’infiltration inflammatoire dans les tissus conjonctifs des lésions buccales du lichen plan

Quantum hypothesis testing for quantum Gaussian states: Quantum analogues of chi-square, t and F tests

We treat quantum counterparts of testing problems whose optimal tests are given by chi-square, t and F tests. These quantum counterparts are formulated as quantum hypothesis testing problems concerning quantum Gaussian states families, and contain disturbance parameters, which have group symmetry. Quantum Hunt-Stein Theorem removes a part of these disturbance parameters, but other types of difficulty still remain. In order to remove them, combining quantum Hunt-Stein theorem and other reduction methods, we establish a general reduction theorem that reduces a complicated quantum hypothesis testing problem to a fundamental quantum hypothesis testing problem. Using these methods, we derive quantum counterparts of chi-square, t and F tests as optimal tests in the respective settings.Comment: 34 pages, 3 figure

Review of Particle Physics

This biennial review summarizes much of Particle Physics. Using data from previous editions, plus 1900 new measurements from 700 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. © 1996 The American Physical Society