Paulo Roberto Fontes Athanázio

ORCID: 0009-0003-4148-3213
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About
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Research Areas
  • Urologic and reproductive health conditions
  • Sarcoma Diagnosis and Treatment
  • Tumors and Oncological Cases
  • Oral and Maxillofacial Pathology
  • Prostate Cancer Diagnosis and Treatment
  • Histiocytic Disorders and Treatments
  • Fungal Infections and Studies
  • Parvovirus B19 Infection Studies
  • Salivary Gland Tumors Diagnosis and Treatment
  • Cancer Diagnosis and Treatment
  • Prostate Cancer Treatment and Research
  • Genital Health and Disease
  • Bone Tumor Diagnosis and Treatments
  • Eosinophilic Disorders and Syndromes
  • Neuroendocrine Tumor Research Advances
  • Biomedical and Engineering Education
  • Liver Disease and Transplantation
  • Gastrointestinal Tumor Research and Treatment
  • Tuberous Sclerosis Complex Research
  • Renal and related cancers
  • Anatomy and Medical Technology
  • Surgical Sutures and Adhesives
  • Ear and Head Tumors
  • Soft tissue tumor case studies
  • Heterotopic Ossification and Related Conditions

Centrus Diagnósticos por Imagem
2025

Universidade Federal da Bahia
2007-2020

Complexo Hospitalar Universitário Professor Edgard Santos
2020

Hospital Ana Nery
2008

Liga Contra el Cancer
1984

PURPOSE: To compare the biocompatibility of ethyl-cyanoacrylate (ECA) and octylcyanoacrylate (OCA) wound closures to sutures in rat skin. METHODS: Twenty-four male Wistar rats were subjected three incisions which closed using ECA, OCA or . Rats divided into four groups received biopsies on 3rd, 7th, 14th 21st post-operative days. Necrosis, inflammation, dermatitis, infection, dehiscence, cicatricial enlargement costs examined; histopathology evaluated was epithelialization, deep openings,...

10.1590/s0102-86502007000400013 article EN cc-by Acta Cirúrgica Brasileira 2007-08-01

Rosai-Dorfman disease (RDD) consists of sinus histiocytosis with massive lymphadenopathy. Extranodal involvement occurs in up to 43% cases. However, isolated soft tissue RDD is rare. Isolated mediastinal exceedingly rare, and there have been only three previous reports. Involvement the posterior mediastinum has reported context disseminated RDD. Here, we report case a 49-year-old female patient two-year history cervical pain lymphadenomegaly, which resolved spontaneously. A CT scan revealed...

10.1590/s1806-37132009000700015 article EN cc-by-nc Jornal Brasileiro de Pneumologia 2009-07-01

Tumors traditionally classified as parachordomas are rare, usually indolent, soft tissue neoplasms. This case report describes a 6-year-old girl with mass in her left forearm measuring 11 x 6 cm. Foci of moderate nuclear atypia and various areas necrosis were found the tumor. Lung metastases detected 3 months after diagnosis. Immunophenotyping revealed strong, diffuse expression pancytokeratin, S-100 protein, vimentin, glial fibrillary acidic protein focal chromogranin A. is fifth documented...

10.1111/j.1600-0560.2008.01032.x article EN Journal of Cutaneous Pathology 2008-09-23

There are 28 unequivocal reports of heterotopic mesenteric ossification (HMO) in the medical literature. Most cases poorly defined lesions intra-abdominal structures that cause intestinal obstruction. A small well-delineated solid mass was reported only one patient with no previous history trauma. We report herein case a 67 year-old female calcified left adnexal region. The awareness HMO may avoid an erroneous diagnosis extraskeletal osteosarcoma. This differs from most as it is third...

10.1590/s1676-24442009000200007 article EN cc-by Jornal Brasileiro de Patologia e Medicina Laboratorial 2009-04-01

Foram estudados 811 pacientes com o diagnóstico histológico de câncer do pênis, procedentes Estado da Bahia, Brasil, entre 1952 e 1983. Cinqüenta por cento dos tinham 46 61 anos idade. Cerca 80% todos os eram das regiões interioranas Estado. A mesorregião Leste Baiano foi a que apresentou freqüência mais elevada, principalmente as microrregiões Recôncavo Baiano, Jequié, Feira Santana Serrinha. O lapso tempo aparecimentos primeira lesão maior três meses em casos. Fimose principal condição...

10.1590/s0034-89101984000600002 article PT cc-by Revista de Saúde Pública 1984-12-01

INTRODUÇÃO: O ensino da Patologia tem papel fundamental na formação médica, por ser o principal elo entre as ciências básicas e a prática clínica, assim como referência para pesquisa científica. A insere-se no grupo de disciplinas que passam um processo mudanças curriculares incorporação novas tecnologias, sendo tal iniciado há duas décadas nos EUA, Austrália Europa. OBJETIVO: Discutir vantagens desvantagens das atingem País, partir experiência internacional. RESULTADOS: Na presente revisão,...

10.1590/s0100-55022009000100007 article PT cc-by Revista Brasileira de Educação Médica 2009-03-01

A case of parietal cell (oncocytic) adenocarcinoma in a 62-year-old woman is reported. This rare entity has 26 reported cases to date and usually related male gender localized disease with favorable prognosis. In the present case, unusual finding extensive nodal metastasis

10.1177/1066896908315750 article EN International Journal of Surgical Pathology 2008-04-02

We present a case of 27-year-old female patient with recurrent soft tissue Rosai-Dorfman disease in the right leg. This report highlights fact that tumor recurrence may arise different sites and show rapid growth.

10.1590/s1676-24442008000400008 article EN cc-by Jornal Brasileiro de Patologia e Medicina Laboratorial 2008-08-01

Abstract Introduction Extraskeletal osteosarcoma arising in the penis is exceedingly rare and its major differential diagnosis sarcomatoid carcinoma. Case presentation A 19-year-old patient noticed a deep nodule dorsal side of 2 years before this presentation. No skin lesions were noted until recent ulceration. In both biopsy penectomy specimen, atypical mononuclear cells diffusely positive for SATB2 (a marker osteoblastic differentiation), CD99 vimentin. These negative pan-keratin, SOX10,...

10.1186/s42047-023-00128-y article EN cc-by Surgical and Experimental Pathology 2023-02-22

Salivary gland carcinosarcoma is a rare neoplasm in which both stromal and epithelial components meet the microscopic criteria for malignancy. Seventy-four cases have been reported English-language literature to date. In this study, we describe case of an 81-year-old male patient with parotid featuring foci undifferentiated carcinoma sarcomatous such as chondrosarcoma, high-grade sarcoma, malignant giant cell tumor. We reviewed discussed occurrence salivary areas tumor, had only twice previously.

10.1590/s1676-24442012000200010 article EN cc-by Jornal Brasileiro de Patologia e Medicina Laboratorial 2012-04-01

Abstract Mucosal Schwann cell hamartomas (MSCHs) are recently characterized benign spindle lesions of the colon and rectum. There is only one report MSCHs in stomach (antrum). Herein, we present first reports occurring fundic mucosa as that endoscopically mimicked a typical gland polyp. Case 1. A 56-year-old woman sought medical attention due to epigastric pain. small polypoid lesion was removed with an endoscopic impression 2. 66-year-old man The patient underwent antral corporal biopsies...

10.1186/s42047-018-0026-3 article EN cc-by Surgical and Experimental Pathology 2019-01-03

Abstract Rhabdomyosarcomas with areas reminiscent of adult type rhabdomyoma are rare and almost exclusive pretreated tumors. We present a case 17-year-old patient who sought medical assistance due to right painless paratesticular mass. At gross examination, the mass was 5 cm tumor (embryonal rhabdomyosarcoma) discrete 2.0 grayish nodule at periphery. microscopy, smaller showed large eosinophilic granular cells suggestive rhabdomyoma. These were strongly diffusely positive for desmin...

10.1186/s42047-020-00063-2 article EN cc-by Surgical and Experimental Pathology 2020-03-31

ABSTRACT Neuroblastoma is an embryonic cancer arising from neural crest stem cell and almost exclusively a pediatric neoplasm. In adults, neuroblastoma rare presents worse prognosis compared to children. The most common presentation of this neoplasia painless abdominal mass. Other signs symptoms can be related mass effect the primary tumor or as result metastatic disease, paraneoplastic syndromes. There are no well-established treatment guidelines for adults with neuroblastoma. general,...

10.5935/2526-8732.20230405 article EN cc-by Brazilian Journal of Oncology 2023-07-31

A esporotricose é uma micose subaguda ou crônica causada, na maioria das vezes, pela inoculação traumática do fungo dimórfico Sporothrix schenckii. É micoses subcutâneas mais comuns América Latina, com distribuição mundial. doença atingiu recentemente proporções epidêmicas em algumas regiões Brasil, como no Rio de Janeiro, onde o número casos transmissão zoonótica por gatos infectados aumentou significativamente. forma tradicional transmissão, porém, a pele, contato solo, plantas substratos...

10.1016/j.bjid.2023.103284 article PT cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2023-10-01

A fifty nine years old female presented a painful proptotic left eye for thirty days. Computed thomography of the orbits disclosed an orbital mass associated with osteolysis and intracranial invasion. Biopsy tumor revealed diagnosis hepatocellular carcinoma. tomography showed liver as primary site tumor. Chemoterapy induced significativ reduction After four months, increased its size pacient died ninetheen months after diagnosis. [...]

10.1590/s0034-72802009000400011 article EN cc-by Revista Brasileira de Oftalmologia 2009-08-01
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