1/8. Recurrent oral condylomata acuminata and hairy leukoplakia: an early sign of myelodysplastic syndrome in an HIV-seronegative patient.Oral hairy leukoplakia (OHL) has been observed in all risk groups seropositive for HIV infection. Recently, this lesion has also been described in HIV-seronegative patients with immunosuppression of iatrogenic origin. We report on a hiv-1 and hiv-2 seronegative, heterosexual man affected by refractory anemia with ringed sideroblasts (myelodysplastic syndrome), who developed recurrent oral condylomata acuminata and OHL as an early clinical manifestation. The diagnosis of OHL was confirmed by identifying Epstein-Barr viral particles by electron microscopy and by in situ dna hybridization. HIV infection was ruled out using polymerase chain reaction and testing for hiv-1 and hiv-2 antibodies.- - - - - - - - - - ranking = 1keywords = leukoplakia (Clic here for more details about this article) |
2/8. Oral hairy leukoplakia with extensive oral mucosal involvement. Report of two cases.Oral hairy leukoplakia (HL) is a lesion that occurs predominantly on the tongue in HIV-infected persons. Evidence strongly indicates that HL is related to the presence of Epstein-Barr virus in the epithelial cells. The lesion appears on the lateral border of the tongue as a painless, white plaque varying in size from a few millimeters to extensive lingual involvement. Histopathologically, the characteristic findings are hyperparakeratosis, hyperplasia, and ballooning of prickle cells resembling koilocytosis. HL is now considered a frequent, early, and specific sign of HIV infection and a strong indicator that AIDS will develop in the patient. We report on two cases of HL with marked oral mucosal involvement with extension to the pharyngeal mucosa.- - - - - - - - - - ranking = 1keywords = leukoplakia (Clic here for more details about this article) |
3/8. Oral hairy leukoplakia is not a specific sign of HIV-infection but related to immunosuppression in general.Oral hairy leukoplakia (HL) has been regarded as an early sign of HIV infection, and its clinical importance related to the poor outcome of the patients has been emphasized. Initially, HL was observed exclusively among male homosexuals, but subsequently demonstrated in all risk groups of HIV infection. The patient described in this article suggests that oral HL is not specific for HIV infection per se, but may be associated with immunosuppression also due to other causes. We describe an HIV-seronegative, heterosexual man suffering from an acute myeloblastic leukemia, who developed clinically and histologically typical HL while on cytostatics. biopsy showed areas with characteristic ballooning cells, and hyphae of yeasts were demonstrated with PAS-stain. Using the in situ hybridization technique, Epstein-Barr virus (EBV) dna with high copy numbers was disclosed in the superficial and intermediate cells, whereas human papillomavirus (HPV) dna (types 6, 11, 16, 18) was not present.- - - - - - - - - - ranking = 1keywords = leukoplakia (Clic here for more details about this article) |
4/8. Oral hairy leukoplakia in an HIV-negative renal transplant recipient.Oral hairy leukoplakia (HL) has been seen exclusively in those infected with HIV or at risk for AIDS. This case report describes an example of HL seen in a renal transplant recipient who was negative for HIV on serology and culture. The diagnosis of HL was confirmed using in situ hybridization for EBV dna.- - - - - - - - - - ranking = 1keywords = leukoplakia (Clic here for more details about this article) |
5/8. Oral hairy leukoplakia-like lesions in an HIV-negative male: a case report.Oral hairy leukoplakia is generally found only in HIV-seropositive individuals or in those who are at risk of developing this infection; its occurrence is accepted to be a reliable predictor for the development of AIDS in those patients who are not already suffering from this disease. This report describes an 18-year-old male who was proven to be HIV-seronegative, was not in any of the at-risk groups associated with this infection, but who had the typical features of oral hairy leukoplakia, clinically and histologically. In such individuals these lesions should be described as hairy leukoplakia-like lesions.- - - - - - - - - - ranking = 1.4keywords = leukoplakia (Clic here for more details about this article) |
6/8. EBV and HSV infections in a patient who had undergone bone marrow transplantation: oral manifestations and diagnosis by in situ nucleic acid hybridization.The course of infections with herpes simplex virus and Epstein-Barr virus in an immunosuppressed patient who had undergone bone marrow transplantation and had tested seronegative for human immunodeficiency virus is described. The clinical oral manifestations were unusual, as they included hairy leukoplakia-like lesions and extensive mucosal ulceration. Histologic examination disclosed unique features consisting of both lichenoid and viral cytopathic changes. The association of the lesions with both Epstein-Barr virus and herpes simplex virus was confirmed by in situ hybridization histochemistry. The importance of recognition of the symptoms, specific diagnosis by dna hybridization, and implications for antiviral prophylaxis and therapy are emphasized.- - - - - - - - - - ranking = 0.2keywords = leukoplakia (Clic here for more details about this article) |
7/8. Epstein-Barr virus coinfection and recombination in non-human immunodeficiency virus-associated oral hairy leukoplakia.Human immunodeficiency virus-associated oral hairy leukoplakia (HLP) is characterized by coinfection with multiple types and strains of Epstein-Barr virus (EBV) and recombination within the EBV genome. HIV-seronegative immunosuppressed and immunocompetent patients with HLP were examined to determine the pathogenic contribution of EBV coinfection and recombination to the development of HLP. Multiple coinfecting EBV strains were detected in both HLP specimens and peripheral blood lymphocytes (PBL) of HIV-seronegative persons with HLP. One specific EBV strain was detected in HLP specimens from 3 of 4 patients. Also, viral recombination during productive replication within HLP generated variants of the latent membrane protein-1 (LMP-1) and nuclear antigen-2 (EBNA-2) genes. Some variants were also detected within PBL. Thus, EBV coinfection and recombination are consistent findings in persons with HLP regardless of immune status. Virally mediated determinants may be important features of EBV pathogenesis.- - - - - - - - - - ranking = 1keywords = leukoplakia (Clic here for more details about this article) |
8/8. Oral hairy leukoplakia in a child: confirmation of the clinical diagnosis by ultrastructural examination of exfoliative cytologic specimens.We report on a 12-year-old girl infected with human immunodeficiency virus (HIV) who developed oral hairy leukoplakia (OHL). This is the fifth child with OHL whose case has been described so far. The clinical diagnosis was confirmed by ultrastructural documentation of a herpes-type virus in the lesional scraping specimen. Exfoliative material was obtained by a painless and noninvasive procedure. We conclude that ultrastructural examination of lingual exfoliative cytological specimens from clinically suspected OHL is a noninvasive and painless method for confirming the clinical diagnosis of OHL.- - - - - - - - - - ranking = 1keywords = leukoplakia (Clic here for more details about this article) |