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Rev. chil. cir ; 64(1): 19-24, feb. 2012.
Article in Spanish | LILACS | ID: lil-627073

ABSTRACT

Background: This study has the purpose to investigate the microscopic basic histological structure of the internal inguinal ring in patients operated on for primary indirect inguinal hernia. Patients and Methods: A sample of 72 consecutive male patients older than 15 years-of-age with unilateral inguinal hernia submitted to elective surgery was studied. The primary outcome measure was the histological findings of the internal inguinal ring. All samples were processed only by histochemical techniques. Patients were divided in 3 groups according to age. Group I: patients between 15 and 40 years-of-age. Group II: patients between 41 and 70 years-of-age. Group III: patients older than 71 years. Results: All samples from the internal inguinal ring were constituted by fibrous fascial tissue with elastic fibers which were thicker in younger patients and thinner in older patients. Adipose tissue between elastic fibers was absent in younger patients and was abundant in older patients. Vascular sclerosis was minimal in Group I, moderate in Group II, and important in Group III. Acute or chronic inflammatory cells were absent in all patients. Conclusions: The histological characteristics of the internal inguinal ring in patients with indirect inguinal hernia consist on reduced density and thickness of elastic fibers and increased adipose tissue between elastic fibers. Vascular sclerosis was more severe as the age of the patients increased. These histological changes were related to normal aging.


Introducción: El presente estudio tiene como objetivo investigar la estructura histológica básica del anillo inguinal interno en pacientes operados por hernia inguinal indirecta primaria. Pacientes y Métodos: Se estudió una muestra de 72 pacientes consecutivos mayores de 15 años de edad con hernia inguinal indirecta unilateral sometidos a cirugía electiva. El objetivo principal fue la histología básica del anillo inguinal interno. Las muestras fueron procesadas con técnicas histoquímicas. Los pacientes se dividieron en 3 grupos de acuerdo a la edad. Grupo I: pacientes entre 15 y 40 años de edad. Grupo II: pacientes entre 41 y 70 años. Grupo III: pacientes mayores de 71 años de edad. Resultados: Todas las muestras histológicas del anillo inguinal estuvieron constituidas por tejido fascial fibroso con fibras elásticas gruesas en pacientes jóvenes y delgadas en pacientes mayores. La esclerosis vascular fue mínima en el grupo I, moderada en el grupo II e importante en el grupo III. No se encontraron células inflamatorias agudas o crónicas. Conclusiones: Las características histológicas básicas del anillo inguinal interno consisten en fibras elásticas que disminuyen su densidad y se adelgazan con la edad y en un aumento simultáneo del tejido adiposo entre estas fibras. La esclerosis vascular se presenta y es más severa en la medida que la edad de los pacientes aumenta. Estos cambios histológicos se relacionan al envejecimiento normal.


Subject(s)
Humans , Male , Adolescent , Adult , Middle Aged , Inguinal Canal/surgery , Inguinal Canal/pathology , Hernia, Inguinal/surgery , Hernia, Inguinal/pathology , Age Factors , Aging , Elective Surgical Procedures , Prospective Studies
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