PAULA CRISTINA DE FARIA SANCHEZ
Projetos de Pesquisa
Unidades Organizacionais
LIM/56 - Laboratório de Investigação em Dermatologia e Imunodeficiências, Hospital das Clínicas, Faculdade de Medicina
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conferenceObject Clinicopathologic correlation of 282 leukocytoclastic vasculitis cases in a tertiary hospital(2016) HERINGER, Antonio Pedro Ribeiro; OLIVEIRA, Caroline Maris Takatu Neves de; AOKI, Valeira; VALENTE, Neusa Yuriko Sakai; SANCHEZ, Paula Cristina de Faria; CRIADO, Paulo Ricardoarticle 8 Citação(ões) na Scopus Melanoma in Children, Adolescents, and Young Adults: A Clinical Pathological Study in a Brazilian Population(2014) SANCHEZ, Paula C. F.; NODA, Aliene Y. I.; FRANCO, Dilcilea D. G. S.; LOURENCO, Silvia V.; SANGUEZA, Martin; NETO, Cyro F.Malignant melanoma in children, adolescents, and young adults is unusual, especially before puberty. In children (age, 0-14 years), most primary lesions are thick and atypical (amelanotic, simulating pyogenic granuloma). In the population of adolescents and young adults (age, 15-39 years), melanoma is the third most common cancer, only behind lymphoma and breast cancer. Our study investigated the records of 89 patients diagnosed with cutaneous melanoma at age 0-39 years at Hospital das Cl nicas, Medical School, University of Sao Paulo between 1992 and 2002. They were divided into group A (0-14 years of age) and group B (15-39 years of age). The histopathology of all cases was reexamined. Statistical analysis of the data presented was performed, and the obtained data were compared with the literature. The frequency of melanoma in the group aged 15-39 years was higher in women, and the most affected site was the trunk. Additionally, melanomas were more frequent at an earlier age in patients with family history of melanoma (P = 0.014). Most cases were diagnosed, at histopathology, as superficial spreading melanoma. Thick nodular melanomas with Breslow values higher than 2 mm were associated with lymph node metastasis (P < 0.05). Our study revealed that melanoma in children, adolescents, and young adults may present peculiar behavior and outcome, which might reflect the genetic and yet not fully unraveled pathogenesis of this complex disease.- Clinicopathologic correlation of 282 leukocytoclastic vasculitis cases in a tertiary hospital: a focus on direct immunofluorescence findings at the blood vessel wall(2017) TAKATU, Caroline Maris; HERINGER, Antonio Pedro Ribeiro; AOKI, Valeria; VALENTE, Neusa Yuriko Sakai; SANCHEZ, Paula Cristina de Faria; CARVALHO, Jozelio Freire de; CRIADO, Paulo RicardoThis is the largest direct immunofluorescence (DIF) analysis of patients with histology-proven cutaneous leukocytoclastic vasculitis (LCV). To establish the correlation of deposition of immune complexes at the blood vessel walls with underlying causes and prognosis of LCV, we performed a retrospective study from January 2007 to December 2014. The patients are followed at the Department of Dermatology, Hospital Das Clinicas da Faculdade de Medicina da Universidade de So Paulo, a tertiary hospital at So Paulo, Brazil. We reviewed the data of 282 biopsy-proven LCV cases with DIF performed. For the statistical analysis, we included only patients with positive DIF exclusively in vessel walls (235/282 patients). We planned to find a correlation between the DIF profiles of LCV patients and the epidemiology data, underlying causes and prognosis. Ages ranged from five to 87 years old (yo), median age of 45 and 191/282 (67.73 %) were female individuals. DIF analysis showed positivity in 70.21 % of the samples, and C3 was the most frequent immunoreactant. Immunoglobulin A (IgA) deposition at the blood vessel wall was related to age and absence of autoimmune/inflammatory diseases. Immunoglobulin M (IgM) deposition at the blood vessel wall was related to females, autoimmune/inflammatory disorders, C3 and C4 consumption and antinuclear antibody and anti-SSA/anti-SSB positivity. Immunoglobulin G (IgG) deposition at the blood vessel wall was associated with age and positive ANCA; finally, C3 deposition at the blood vessel wall was associated with hematuria and renal involvement. Systemic involvement was present in 12.5 % cases of LCV patients. C3 deposits, the most frequent finding of this study, were related to renal involvement; IgA deposits to absence of autoimmune or inflammatory diseases; IgM deposition to the presence of autoimmune or inflammatory diseases and IgG deposits were associated with positive ANCA. DIF seems to be an important method to establish the prognosis and underlying etiology of LCV. Characterization of the immune complex at the blood vessel wall by DIF is relevant to determine underlying conditions related to LCV.
conferenceObject Melanoma in children, adolescents, and young adults: A clinicopathologic study in a Brazilian population(2014) NODA, Aliene; NETO, Cyro; FRANCO, Dilcilea; SANGUEEZA, Martin; SANCHEZ, Paula; LOURENCO, Silvia- Nevus Trichilemmo-cysticus: A Mild Case(2019) SANCHEZ, Paula Cristina Faria; VALENTE, Neusa Yuriko Sakai; NICO, Marcello Menta Simonsen