RESUMO
UNLABELLED: Expression patterns of proteins involved in serine and glycine metabolism, and correlations of these patterns with clinicopathologic factors in phyllodes tumor were investigated. Tissue microarrays were prepared from 203 phyllodes tumors (PT) and stained with antibodies specific for glycine decarboxylase (GLDC), phosphoserine aminotransferase 1 (PSAT1), phosphoserine phosphatase (PSPH), phosphoglycerate dehydrogenase (PHGDH), and serine hydroxymethyltransferase 1 (SHMT1). These immunohistochemical results and clinicopathologic parameters were analyzed for correlation. Numbers of benign, borderline, and malignant tumors were 155, 32, and 16, respectively. Stromal expression of PHGDH, PSAT1, PSPH, SHMT1, and GLDC increased with increasing tumor grade, and epithelial expression of SHMT1 also increased with increasing tumor grade (p<0.001, and p=0.005, respectively). On univariate analysis, positive stainings for stromal PHGDH (p<0.001), stromal PSAT1 (p<0.001), stromal PSPH (p=0.003), epithelial SHMT1 (p=0.001), stromal SHMT1 (p=0.022), and stromal GLDC (p<0.001) were each associated with shorter disease-free survival. Stromal GLDC was associated with shorter overall survival (p<0.001). In conclusion, expression of proteins related to serine and glycine metabolism increased with increasing histologic grade in stromal components of phyllodes tumor. KEYWORDS: glycine, tumor grade, metabolism, phyllodes tumor, serine.
Assuntos
Neoplasias da Mama/metabolismo , Glicina/metabolismo , Tumor Filoide/metabolismo , Serina/metabolismo , Adulto , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Tumor Filoide/mortalidade , Tumor Filoide/patologiaAssuntos
Neoplasias de Cabeça e Pescoço/patologia , Queratinas/metabolismo , Linfoma não Hodgkin/patologia , Idoso de 80 Anos ou mais , Biópsia por Agulha Fina , Técnicas Citológicas , Feminino , Neoplasias de Cabeça e Pescoço/diagnóstico , Neoplasias de Cabeça e Pescoço/metabolismo , Neoplasias de Cabeça e Pescoço/ultraestrutura , Humanos , Linfonodos/patologia , Linfoma não Hodgkin/diagnóstico , Linfoma não Hodgkin/metabolismo , Linfoma não Hodgkin/ultraestruturaRESUMO
Primary ovarian hepatoid carcinomas (POHC) are extremely rare. Especially rare are those with phenotypic properties of hepatocellular carcinoma (HCC) and an absence of clinical evidence of hepatic tumor. We report a case of a POHC with a common microscopic, immunophenotypic, and ultrastructural property of HCC in the absence of a liver mass. It is extremely difficult to differentiate POHC from metastatic HCC using any kinds of ancillary studies, with the exception of clinical identification of a hepatic tumor.