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Objective(s): One of the different types of skin leishmaniasis is the Chronic Lupoid Leishmaniasis (CLL), which is caused by abnormal immune response. On the other hand, HTLV-I has been known to exist in some infectious diseases. Human T cell lymphotropic virus type1 (HTLV-I) and cutanous leishmaniasis exists endemically in Mashhad. The objective of this study was to evaluate the prevalence of HTLV-I in CLL patients., Materials and Methods: This cross sectional study involved 51 CLL patients admitted to cutaneous leishmaniasis clinics of Ghaem and Imam Reza hospitals in Mashhad, Iran. The blood samples were examined for serology tests through ELISA method., Results: The results of the experiments for evaluating the existence of HTLV-I in 51 patients under study in this research were proved to be negative., Conclusion: According to this pilot study, the distribution of HTLV-I in CLL patients is not higher than normal population. more...

Objectives: Human papillomavirus (HPV) infections are related to the genesis of various benign lesions and some malignant tumors, but no clear relationship has been identified so far between the subtypes of HPV and skin tag., Materials and Methods: The present case-control study was designed to detect the existence of low risk and high risk HPV types in lesions of 50 patients with skin tag (case group) and normal skin around the melanocytic nevus of 30 patients (control group), using PCR., Results: All of the samples were negative for HPV subtypes, except two samples in control group which were positive for high risk HPV. There was no significant relationship between the HPV subtypes and skin tag., Conclusion: There is no association between skin tag and low risk and high risk human papillomaviruses. more...