Solitary frontal ulcer: A syphilitic gumma

We report the case of a 30-year-old woman presenting with a single, deep, asymptomatic frontal ulcer that had developed in the previous two months without preceding trauma. Blood tests revealed reactive Rapid Plasma Reagin and Treponema pallidum hemagglutination assays. The diagnosis of syphilitic gumma was confirmed after histological analysis of the ulcer border. No other manifestations of late syphilis were detected. Ulcer healing was observed after treatment with benzathine penicillin and there was progressive reduction of follow-up serum RPR titers. The relevance of this case arises from its unusual presentation in a previously healthy immunocompetent individual

Renormalization of the N=1 Abelian Super-Chern-Simons Theory Coupled to Parity-Preserving Matter

We analyse the renormalizability of an Abelian N=1 super-Chern-Simons model coupled to parity-preserving matter on the light of the regularization independent algebraic method. The model shows to be stable under radiative corrections and to be gauge anomaly free.Comment: Latex, 7 pages, no figure

Revisiting the statistical isotropy of GRB sky distribution

The assumption of homogeneity and isotropy on large scales is one of the main hypotheses of the standard cosmology. In this paper, we test the hypothesis of isotropy from the two-point angular correlation function of 2626 gamma-ray bursts (GRB) of the FERMI GRB catalogue. We show that the uncertainties in the GRB positions induce spurious anisotropic signals in their sky distribution. However, when such uncertainties are taken into account no significant evidence against the large-scale statistical isotropy is found. This result remains valid even for the sky distribution of short-lived GRB, contrarily to previous reports.Comment: 9 pages, 10 figures, 2 tables, match accepted versio