Abstract
Four cases with distinctive features were reported. They were a 54-year-old man, a 46-year-old man, a 31-year-old man, and a 25 year-old man. The duration of the diseases ranged from one and a half year to 6 years. They had several features in common. Clinically they showed swelling, abscesses, fistulas, sinus tracts, hypertrophic scars or sclerosis and pigmentation of the skin on large areas of the perianal region and the buttocks of long duration. Histopathological changes were those of chronic inflammation consisting of the infiltration of small round cells and plasma cells, fibrosis, and granulation tissues at times. Specific granulomas were not observed. Cultures showed the growth of various kinds of organisms such as Staphylococcus aureus, E. coli, Micrococcus, and Proteus at different times, but not mycobacteria or fungi. Review of the literature showed that such an entity has been reported under various names. We came to conclude that they are all the same disease and that these diagnostic names are reasonably comprised under the name of ‘chronic perianal pyoderma’. Chronic perianal pyoderma is well differentiated from other pyogenic dermatoses his topathologically and bacteriologically, such as tuberculosis, venereal diseases, deep fungus infection and neoplastic diseases of the skin.
