REGIS OTAVIANO FRANCA BEZERRA
Projetos de Pesquisa
Unidades Organizacionais
Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina
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- Primary liposarcoma of the pancreas: A review illustrated by findings from a recent case(2016) MACHADO, Marcel Cerqueira Cesar; FONSECA, Gilton Marques; MEIRELLES, Luciana Rodrigues de; ZACCHI, Flavia Fernandes Silva; BEZERRA, Regis Otaviano FrancaLiposarcoma is the most common soft tissue sarcoma and accounts for 15%-20% of all mesenchymal malignancies. The tumor occurs most frequently in limbs and retroperitoneum, with only rare instances of visceral location reported. Pancreas is a very rare site of primary liposarcoma, with a total of seven cases reported since 1979 and only four of those in the English literature. We review the literature specific for primary liposarcoma of the pancreas and discuss radiological and pathological aspects of this rare tumor type as well as emerging options of treatment. The review is illustrated by findings of a recent case of a dedifferentiated liposarcoma of the pancreas coupled with undifferentiated pleomorphic sarcoma, including the first description of this rare tumor by magnetic resonance imaging. The patient was successfully treated with distal pancreatectomy and splenectomy, followed by adjuvant chemotherapy and radiotherapy. At the 5-year follow-up, the patient showed no signs of recurrence.
- Whole-Body Magnetic Resonance Imaging in the Oncology Setting: An Overview and Update on Recent Advances(2019) BEZERRA, Regis Otaviano Franca; RECCHIMUZZI, Debora Zachello; MOTA, Micaela Maciel dos Santos; GARCIA, Marcio Ricardo Taveira; MENEZES, Marcos Roberto de; MAZO, Paulo Eduardo; CERRI, Giovanni GuidoWhole-body magnetic resonance imaging is becoming an important tool in oncology as a nonirradiating imaging technique since recent technological advances allowed the incorporation of high-quality imaging in an adequate time. Moreover, the noninjection of radioisotope/intravenous contrast, low cost compared with traditional nuclear medicine techniques, and fast acquisition times are another distinct feature. Thus, the purpose of this article is to review the whole-body magnetic resonance imaging protocol and its main applications in the oncology setting.
- Rare pancreatic masses: a pictorial review of radiological concepts(2018) BEZERRA, Regis Otaviano Franca; MACHADO, Marcel Cerqueira; MOTA, Micaela Maciel dos Santos; EZZEDINE, Tamara Abou; SIQUEIRA, Luiz Tenorio de Brito; CERRI, Giovanni GuidoNon-ductal pancreatic neoplasm (NPN) represents a heterogeneous group of pancreatic masses, in which diagnosis and management remain challenging due to their overall rarity. Knowledge of their radiologic features is essential for differential diagnosis and to guide clinical decisions for optimal management. The purpose of this paper was to present radiological patterns of these rare pancreatic tumors, solid or predominantly solid, with emphasis in the differential diagnosis and surgical management.