Fifty-seven cases previously diagnosed as either dysplasia or carcinoma in-situ by three Japanese medical centers were reviewed and reclassified as either condyloma, CIN I, II, III or squamous metaplasia. Of 46 cases previously diagnosed as mild or moderate dysplasia (CIN I-CIN II) 13 were reclassified as condylomata. Immunoperoxidase localization of human papilloma virus antigens was negative ...

Human papilloma virus (HPV) was isolated from red plaques of a patient (N. F.) with epidermodysplasia verruciformis. Electron microscopic examination showed characteristic particles of papilloma virus as icosahedrons about 45 nm in diameter. DNA was extracted from these particles, and closed-circular DNA (Form I) was purified by centrifugation in CsCl containing ethidium bromide. The molecular ...

Human papilloma virus (HPV) infection is a very common infection of skin and mucosa of children and adults (1- 6).Anogenital warts are a common type of HPV infection in sexually active adults, however it is seen in any age. The importance of presence of genital warts is different between adults and children in respect to differential diagnosis, associations, complications and also treatment opt...

human papilloma virus (hpv) infection is a very common infection of skin and mucosa of children and adults (1- 6).anogenital warts are a common type of hpv infection in sexually active adults, however it is seen in any age. the importance of presence of genital warts is different between adults and children in respect to differential diagnosis, associations, complications and also treatment opt...

Oral squamous papillomas are benign proliferating lesions induced by human papilloma virus. These lesions are painless and slowly growing masses. As an oral lesion, it raises concern because of its clinical appearance. These lesions commonly occur between age 30 and 50 years, and sometimes can occur before the age of 10 years. Oral squamous papilloma accounts for 8% of all oral tumors in childr...

The latest experimental data on the role of viruses in the origin of human tumors are discussed. This group of viruses consists of T-cell leukemia virus type 1 (HTLV 1), herpes viruses (HHV 8 and Epstein-Barr virus), hepatitis B virus, and human papilloma viruses. The most typical feature of this group of viruses is a very long latent period from the initial infection to the development of the ...

OBJECTIVES Papilloma frequently develops as a benign tumor of the head and neck area, but its potential for malignant transformation has yet to be studied. This study aims to provide basic information for papillomas using the immunohistochemical staining of matrix metalloproteinase 2 (MMP-2) and human papilloma virus (HPV) 16 and 18. MATERIALS AND METHODS To evaluate the malignant transformat...

The occurrence of spontaneous skin papillomas in Japanese newts (Cynops pyrrhogaster) from Niigata prefecture in Northern Japan was monitored over four seasons covering a period of 2 years. Of 13,613 newts, 249 were found to possess papillomas. The percentage of newts with papillomas was highest in autumn, ranging from 1.93 to 5.45% of the total average. These values were more than four times a...