Granuloma faciale: clinical, morphological and immunohistochemical aspects in a series of 10 patients
An. bras. dermatol
;
91(6): 803-807, Nov.-Dec. 2016. tab, graf
Article
in English
| LILACS
| ID: biblio-837999
ABSTRACT
Abstract Granuloma faciale is a chronic, benign, cutaneous vasculitis with well-established clinical and morphological patterns, but with an unknown etiology. This study describes clinical and pathologic aspects of patients diagnosed with granuloma faciale. The authors analyzed demographic, clinical, morphological and immunohistochemical data from patients with a final diagnosis of granuloma faciale, confirmed between 1998 and 2012. There was a proportional and mixed inflammatory infiltrate, Grenz zones were present in almost all the samples. Immunophenotyping confirmed a higher intensity of T lymphocytes than B lymphocytes in thirteen samples, with a predominance of T CD8 lymphocytes in 64% of cases, in contrast to the literature, which indicates that the major component is T CD4 lymphocytes. All cases were positive for IgG4 but the majority (12/14) had less than 25% of stained cells. The pathogenesis of granuloma faciale remains poorly understood, making studies of morphological and immunohistochemical characterization important to better understand it.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Facial Dermatoses
/
Granuloma
Type of study:
Observational study
/
Prevalence study
/
Risk factors
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
English
Journal:
An. bras. dermatol
Journal subject:
Dermatology
Year:
2016
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual Paulista "Júlio de Mesquita Filho"/BR
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