5 results

Clinicopathological and immunohistochemical analysis of spindle cell squamous cell carcinoma of the tongue: a rare case

Diego Filipe Bezerra Silva ORCID logo , Hellen Bandeira de Pontes Santos ORCID logo , Jorge Esquiche León ORCID logo , Daliana Queiroga de Castro Gomes ORCID logo , Pollianna Muniz Alves ORCID logo , Cassiano Francisco Weege Nonaka ORCID logo

DOI: 10.31744/einstein_journal/2019RC4610

ABSTRACT Spindle cell squamous cell carcinoma of the tongue is a rare variant of squamous cell carcinoma. This paper reports the case of a spindle cell squamous cell carcinoma of the tongue, in a 64-year-old male patient, and presents a review of the etiopathogenesis, clinicopathological and immunohistochemical features and treatment of the malignancy. The patient presented for evaluation of a painful swelling on his tongue. Extraoral examination revealed palpable submandibular and superior cervical lymph nodes. Based on the presumptive diagnoses […]

Clinical and immunohistochemical study of melanotic neuroectodermal tumor of infancy in the maxilla

Hellen Bandeira de Pontes Santos, Aníbal Henrique Barbosa de Luna, Pedro Everton Marques Goes, Alexander Tadeu Sverzut, Cassiano Francisco Weege Nonaka, Pollianna Muniz Alves

DOI: 10.1590/S1679-45082018RC4025

ABSTRACT Melanotic neuroectodermal tumor of infancy is a rare and fast-growing neoplasm. In this study, we describe the case of a 6-month-old female patient, who presented swelling in the anterior maxilla. Tomographic reconstruction showed an unilocular hypodense and expansive area associated with the upper right central primary incisor. The presumptive diagnoses were dentigerous cyst, adenomatoid odontogenic tumor, melanotic neuroectodermal tumor of infancy and rhabdomyosarcoma, and an incisional biopsy was performed. Microscopically, the lesion revealed a biphasic cell population, consisting of […]

The destruction complex of beta-catenin in colorectal carcinoma and colonic adenoma

Guilherme Muniz Bourroul, Hélio José Fragoso, José Walter Feitosa Gomes, Vivian Sati Oba Bourroul, Celina Tizuko Fujiyama Oshima, Thiago Simão Gomes, [...]

DOI: 10.1590/S1679-45082016AO3678

ABSTRACTObjectiveTo evaluate the destruction complex of beta-catenin by the expression of the proteins beta-catetenin, adenomatous polyposis coli, GSK3β, axin and ubiquitin in colorectal carcinoma and colonic adenoma.Methods Tissue samples from 64 patients with colorectal carcinoma and 53 patients with colonic adenoma were analyzed. Tissue microarray blocks and slides were prepared and subjected to immunohistochemistry with polyclonal antibodies in carcinoma, adjacent non-neoplastic mucosa, and adenoma tissues. The immunoreactivity was evaluated by the percentage of positive stained cells and by the intensity […]

Immunoexpression of the COX-2, p53, and caspase-3 proteins in colorectal adenoma and non-neoplastic mucosa

Renan Brito Nogueira, Andréa Rodrigues Cordovil Pires, Thélia Maria Santos Soares, Simone Rabello de Souza Rodrigues, Mariane Antonieta Menino Campos, Giovanna Canato Toloi, [...]

DOI: 10.1590/S1679-45082013000400009

Objective:To analyze the immunoexpression of the COX-2, p53, and caspase-3 proteins in colorectal adenomas and non-neoplastic mucosa.METHODS:72 individuals were subjected to colonoscopy, which provided 50 samples of adenomas and 45 samples of non-neoplastic colorectal mucosa. The tissue samples were obtained via the tissue microarray technique and subjected to immunohistochemical analysis using primary anti-p53, anti-COX-2, and anti-caspase-3 antibodies. The positivity and intensity of the immunoreaction were classified. The analyzed variables were as follows: site of the adenomas in the colon, degree […]

Correlation between flow cytometry and histologic findings: ten year experience in the investigation of lymphoproliferative diseases

Alanna Mara Pinheiro Sobreira Bezerra, Denise da Cunha Pasqualin, João Carlos de Campos Guerra, Marjorie Paris Colombini, Elvira Deolinda Rodrigues Pereira Velloso, Paulo Augusto Achucarro Silveira, [...]

DOI: 10.1590/S1679-45082011AO2027

ABSTRACT Objective: To demonstrate the advantages of correlating flow cytometry immunophenotyping with the pathology/ immunohistochemistry of lymph nodes or nodules in the diagnosis of lymphoproliferative diseases. Methods: A retrospective study was carried out of 157 biopsy or fine-needle aspiration lymph nodes/ nodule specimens taken from 142 patients, from 1999 and 2009. The specimens were simultaneously studied with fow cytometry and pathology at Hospital Israelita Albert Einstein. The specimens were prepared in hematoxylin/eosin, Giemsa, or monoclonal antibody stained slides for detecting […]