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Garcia Neto V, de Almeida HL, Lorea CF, Jorge VM, de Almeida AL. McCune-Albright syndrome - a case report with café-au-lait lesion transmission electron microscopy. An Bras Dermatol 2021; 97:58-62. [PMID: 34839987 PMCID: PMC8799854 DOI: 10.1016/j.abd.2021.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/22/2021] [Accepted: 09/05/2021] [Indexed: 11/11/2022] Open
Abstract
McCune - Albright syndrome is a genetic disease with cutaneous mosaicism caused by post-zygotic activating mutations in GNAS locus, it has a triad of fibrous bone dysplasia, café-au-lait macules and precocious puberty. We examined a 22-year-old female patient with café au lait spot in right side of the abdomen, with a chessboard - like distribution, extending to right thigh with geographical contours, she has also an ovarian cyst, scoliosis and truncal obesity. Biopsies were taken from the hyperpigmented area and processed for light microscopy and for transmission electron microscopy. Light microscopy showed increased melanin pigment with HE staining. Immunohistochemistry with melanocytic markers (HMB-45 and Melan-A) revealed a normal number of melanocytes. Transmission electron microscopy demonstrated normal epidermal structures, such as desmosomes, cytokeratin filaments and hemidesmosomes. With high magnifications an irregular melanossomal contour was seen, with some indentations in their outline.
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Affiliation(s)
- Victor Garcia Neto
- Post-Graduation Program in Health Sciences, Universidade Católica de Pelotas, Pelotas, RS, Brazil
| | - Hiram Larangeira de Almeida
- Post-Graduation Program in Health Sciences, Universidade Católica de Pelotas, Pelotas, RS, Brazil; Department of Dermatology, Universidade Federal de Pelotas and Universidade Católica de Pelotas, Pelotas, RS, Brazil.
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Quintana FSL, de Almeida Jr. HL, Ruas CP, Jorge VM. Scanning electron microscopy of dermatofibroma. An Bras Dermatol 2019; 94:358-360. [PMID: 31365670 PMCID: PMC6668944 DOI: 10.1590/abd1806-4841.20197906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/16/2018] [Indexed: 11/21/2022] Open
Abstract
Dermatofibroma is a proliferation of spindle cells located in the dermis. We used scanning electron microscopy to examine two histologically confirmed lesions and observed preserved collagen bundles in the perilesional area. In the lesional area, the collagen was denser, without formation of bundles. Higher magnification showed collagen with mesh-like appearance similar to stretched tufts of cotton. Very high magnification evidenced the tufts of cotton and spindle cells measuring 2 to 12 microns.
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Affiliation(s)
- Felipe Simões Lopes Quintana
- Post-Graduation Program in Health and Behavior, Universidade
Católica de Pelotas, Pelotas (RS), Brazil
- University Hospital, Universidade Federal de Pelotas, Pelotas (RS),
Brazil
| | - Hiram Larangeira de Almeida Jr.
- Post-Graduation Program in Health and Behavior, Universidade
Católica de Pelotas, Pelotas (RS), Brazil
- Department of Dermatology, Universidade Federal de Pelotas, Pelotas
(RS), Brazil
| | - Caroline Pires Ruas
- Electron Microscopy Center of the South, Fundação
Universidade de Rio Grande, Rio Grande (RS), Brazil
| | - Valéria Magalhães Jorge
- Post-Graduation Program in Health and Behavior, Universidade
Católica de Pelotas, Pelotas (RS), Brazil
- Pathology Department, Universidade Federal de Pelotas, Pelotas
(RS), Brazil
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Rampon G, Henkin C, Jorge VM, de Almeida Jr. HL. Methotrexate-induced mucositis with extra-mucosal involvement after acidental overdose. An Bras Dermatol 2018; 93:155-156. [PMID: 29641725 PMCID: PMC5871390 DOI: 10.1590/abd1806-4841.20186687] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 01/23/2017] [Indexed: 08/17/2023] Open
Affiliation(s)
- Greice Rampon
- Dermatology Service, Pontifícia Universidade
Católica do Rio Grande do Sul (PUC- RS) - Porto Alegre (RS),
Brazil
| | - Caroline Henkin
- Dermatology Service, Pontifícia Universidade
Católica do Rio Grande do Sul (PUC- RS) - Porto Alegre (RS),
Brazil
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Abstract
We report the ultrastructural findings in a case of a 72-year-old black woman
with confluent yellowish papules in the cervical region. She had no
comorbidities. Ophthalmological examination, electrocardiogram, and
echocardiogram were normal. Hematoxylin-eosin staining of the affected skin
showed strong alterations in the mid-dermis with irregular clumps of
eosinophilic material and loss of the normal parallel arrangement of collagen
bundles. Orcein staining revealed that the elastic fibers lost their normal
linear configuration, showing clump fragmentation, sometimes forming square
structures. Transmission electron microscopy showed aberrant elastic fibers with
an irregular outline and heterogenic inner structures. We also observed small
elastic fibers. Collagen fibers showed a normal structure with irregular
distribution. Scanning electron microscopy revealed important disorganization of
collagen fibers and small stone-like deposits measuring around 5 µm
associated with bigger structures ranging from 10-16 µm. Higher
magnification revealed that these small stone-like structures were sometimes
polyhedral-shaped or squared.
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Affiliation(s)
- Hiram Larangeira de Almeida
- Department of Dermatology, Universidade Federal de Pelotas (UFPel) - Pelotas (RS), Brazil.,Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas (UCPel) - Pelotas (RS), Brazil
| | - Mariana Geber de Almeida
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas (UCPel) - Pelotas (RS), Brazil
| | - Valéria Magalhães Jorge
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas (UCPel) - Pelotas (RS), Brazil.,Department of Pathology, Universidade Federal de Pelotas (UFPel) - Pelotas (RS), Brazil
| | - Luciana Boff de Abreu
- Dermatology Service, Pontifícia Universidade Católica do Rio Grande do Sul (PUC-RS) - Porto Alegre (RS), Brazil
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de Souza SP, Jorge VM, Xavier MO. Paracoccidioidomycosis in southern Rio Grande do Sul: a retrospective study of histopathologically diagnosed cases. Braz J Microbiol 2014; 45:243-7. [PMID: 24948940 PMCID: PMC4059305 DOI: 10.1590/s1517-83822014000100035] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 09/09/2013] [Indexed: 11/23/2022] Open
Abstract
Paracoccidioidomycosis (PCM) is a systemic mycosis caused by the fungus Paracoccidioides brasiliensis and is endemic to Brazil. The aim of this study was to perform a retrospective analysis of the PCM cases in the countryside south of Rio Grande do Sul, Brazil. The files from four histopathology laboratories located in the city of Pelotas were obtained, and all of the epidemiological and clinical data from the PCM diagnosed cases were collected for analysis. A total of 123 PCM cases diagnosed between 1966 and 2009 were selected. Of these patients, 104 (84.5%) were male, and 17 were female. The patients ranged from 02 to 92 years of age. Fifty-two cases (41.9%) were obtained from the oral pathology laboratory, and the remaining 71 cases (58.1%) were obtained from the three general pathology laboratories. Of all of the patients studied, 65.2% lived in rural zones and worked in agriculture or other related fields. Data on the evolution of this disease was available for 43 cases, and the time frame ranged from 20 to 2920 days (mean = 572.3 days). An accurate diagnosis performed in less than 30 days only occurred in 21% of the cases. PCM is endemic to the countryside of Rio Grande do Sul. Therefore, it is recommended that PCM be included as a differential diagnosis, mainly for individuals between 30 and 60 years of age, living in rural zones and who have respiratory signs and associated-oropharyngeal lesions.
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Affiliation(s)
| | - Valéria Magalhães Jorge
- Faculdade de Odontologia Universidade Federal de Pelotas PelotasRS Brazil ; Santa Casa de Misericórdia de Pelotas PelotasRS Brazil
| | - Melissa Orzechowski Xavier
- Faculdade de Medicina Universidade Federal do Rio Grande Rio GrandeRS Brazil ; Programa de Pós-Graduação em Ciências da Saúde Universidade Federal do Rio Grande Rio GrandeRS Brazil
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Abrahão A, de Aquino CCH, Pedroso JL, Baiense RF, Oliveira RA, Jorge VM, Barsottini OGP. Teaching NeuroImages: brucellosis mimicking demyelinating disease. Neurology 2011; 76:e51. [PMID: 21403104 DOI: 10.1212/wnl.0b013e3182104370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- A Abrahão
- Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo, Rua Pedro de Toledo, 650, CEP 04039-000, São Paulo, SP, Brazil
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Almeida MWR, Diniz ABS, Nachtigal GC, Jorge VM, de Oliveira FS. [Non-Hodgkin's lymphoma of the spermatic cord]. Rev Col Bras Cir 2010; 36:466-7. [PMID: 20069161 DOI: 10.1590/s0100-69912009000500017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Accepted: 06/02/2006] [Indexed: 11/22/2022] Open
Abstract
Non-Hodgkin s lymphoma of the spermatic cord are rare. There is the registration of 14 (fourteen) cases of spermatic cord lymphoma in the literature, all treated with radical orchiectomy with or without radiotherapy. The adjuvant chemotherapy still is not a consensus, therefore the therapy must be individualized and applied according to the stage of the disease. The present study report a new case of primary non-Hodgkin s lymphoma of the spermatic cord treated with radical orchiectomy through inguinal via with precocious ligature of the spermatic cord and adjuvant chemotherapy. Presently found with 2 and a half years of follow-up without recidivation clinical evidence, as the image exams show to be normal.
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Jacobo A, Almeida HLD, Jorge VM. Congenital erythropoietic porphyria in two siblings. Dermatol Online J 2005; 11:15. [PMID: 16409911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] Open
Abstract
Congenital erythropoietic porphyria is a very rare autosomal recessive disease, with mutation in the gene that codifies uroporphyrinogen-III synthetase, leading to porphyrin accumulation in many tissues, with marked skin photosensitivity. Two male siblings, aged 43 and 29, are described. The oldest shows severe sclerodermiform mutilation and the youngest exhibits initial involvement with hypertrichosis. Laboratory investigation shows polycythemia, increased urine uroporphyrins and coproporphyrins and increased erythrocyte porphyrins.
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Jacobo A, Jr HLDA, Jorge VM. Porfìria eritropoiética congênita: Relato de dois irmãos (Portuguese). Dermatol Online J 2005. [DOI: 10.5070/d31x55j1zz] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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