Síndrome del Granuloma Leproide Canino: un estudio retrospectivo (1990 – 2010) realizado en el Laboratorio de Patología de la Universidad Nacional
Fecha
2012
Autores
Araya González, Karen Vanessa
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Nacional, Costa Rica
Resumen
El siguiente trabajo consistió en el estudio retrospectivo del Síndrome del Granuloma
Leproide Canino utilizando biopsias de piel remitidas al Laboratorio de Patología de la
Universidad Nacional entre los años 1990 a 2010.
Durante este período se recopilaron 79 casos con diagnóstico de “Dermatitis Piogranulomatosa”, de los cuales 16 correspondieron a la enfermedad en cuestión, de la información
recolectada se observó que las lesiones macroscópicas se localizaron principalmente en el
pabellón de la oreja. No se presentó predisposición por raza; sin embargo, los más afectados
fueron los “Sin Raza Definida”, seguido por los Bóxer, Doberman, Golden Retriever y, por
último los Basset Hound. La enfermedad afectó más a los machos que a las hembras, siendo la
mayoría de edad adulta (desde los 3 hasta los 10 años).
El diagnóstico fue realizado mediante hallazgos histopatológicos con la tinción de rutina
Hematoxilina y Eosina; y con tinciones especiales como las de Ziehl Neelsen y Fite-Fáraco.
En cuanto a los hallazgos histopatológicos se encontró que en la mayoría de los casos en
epidermis se presentó hiperqueratosis paraqueratótica, hiperplasia severa y acantosis. En la
dermis, el patrón histopatológico predominante fue el nodular, con predominio del infiltrado
granulomatoso (acúmulos de macrófagos, células gigantes principalmente y en menor cantidad
de neutrófilos, entremezclados linfocitos y células plasmáticas), presencia de perifoliculitis,
periadenitis sebácea, vasculitis y fibrosis.
No se presentó correlación significativa entre la carga de bacilos ácido alcohol resistentes
(BAAR) y el patrón histopatológico, entre la carga de BAAR y la dominancia del infiltrado
inflamatorio, entre la carga de BAAR y la cantidad de células gigantes y, entre el patrón
histopatológico y la cantidad de células gigantes.
We performed a retrospective study of Canine Leproide Granuloma Syndrome using skin biopsies submitted to the Laboratory of Pathology, National University from 1990 to 2010. During this period 79 cases were collected with a diagnosis of "pyogranulomatous dermatitis", of which 16 corresponded to this disease, the data collected showed that gross lesions were located mainly in the pinna. Did not show predilection by breed, but the most affected were the "MB" (Mixed Breed), followed by the Boxer, Doberman, Golden Retriever, and finally the Basset Hound. The disease affects more males than females, the majority of affected dogs was adults (from 3 to 10 years). Diagnosis was made by histopathological study, with the routine stain hematoxylin and eosin, and with special stains such as Ziehl Neelsen and Fite-Faraco. As for the histopathological findings it was found that in most cases the epidermis showed parakeratotic hyperkeratosis, acanthosis and severe hyperplasia. In the dermis, the predominant histological pattern was nodular infiltrate predominantly granulomatous (accumulation of macrophages, giant cells mainly and to a lesser number of neutrophils, and cluster of lymphocytes and plasma cells), presence of perifolliculitis, sebaceous periadenitis, vasculitis and fibrosis. Did not show significant correlation between the load of acid-fast bacilli (AFB) and the histopathological pattern, between the load of AFB and the dominance of the inflammatory infiltrate between the load of AFB and the number of giant cells and, between the histological pattern and the number of giant cells.
We performed a retrospective study of Canine Leproide Granuloma Syndrome using skin biopsies submitted to the Laboratory of Pathology, National University from 1990 to 2010. During this period 79 cases were collected with a diagnosis of "pyogranulomatous dermatitis", of which 16 corresponded to this disease, the data collected showed that gross lesions were located mainly in the pinna. Did not show predilection by breed, but the most affected were the "MB" (Mixed Breed), followed by the Boxer, Doberman, Golden Retriever, and finally the Basset Hound. The disease affects more males than females, the majority of affected dogs was adults (from 3 to 10 years). Diagnosis was made by histopathological study, with the routine stain hematoxylin and eosin, and with special stains such as Ziehl Neelsen and Fite-Faraco. As for the histopathological findings it was found that in most cases the epidermis showed parakeratotic hyperkeratosis, acanthosis and severe hyperplasia. In the dermis, the predominant histological pattern was nodular infiltrate predominantly granulomatous (accumulation of macrophages, giant cells mainly and to a lesser number of neutrophils, and cluster of lymphocytes and plasma cells), presence of perifolliculitis, sebaceous periadenitis, vasculitis and fibrosis. Did not show significant correlation between the load of acid-fast bacilli (AFB) and the histopathological pattern, between the load of AFB and the dominance of the inflammatory infiltrate between the load of AFB and the number of giant cells and, between the histological pattern and the number of giant cells.
Descripción
Modalidad: Proyecto de Graduación
Palabras clave
PERRO, DOG, LEPRA, DERMATOSIS, PATOLOGÍA ANIMAL, ANIMAL PATHOLOGY, DIAGNOSTICO DE LABORATORIO (MEDICINA VETERINARIA)