Idiopathic Eruptive Macular Pigmentation (IEMP) is an uncommon and possibly underdiagnosed dermatosis. It manifests as asymptomatic pigmented macules over the face, trunk and proximal extremities among children and adolescents. Degos et al. first documented this condition in 1978, unveiling its distinct characteristics. The macules, initially dark brown-black, naturally diminish over several months to years, with no lasting pigmentation or scarring. In this report, we highlight the case of a 14-year-old girl displaying all the distinctive traits of IEMP.

The literature review presents current data on the epidemiology, drug, and surgical treatment of laryngeal papillomatosis in adults. Possible prospects for further study of the prevalence and incidence of the disease and provoking factors of recurrence of the disease for the development of possible preventive measures are considered.
В обзоре литературы представлены современные данные об эпидемиологии, лекарственном и хирургическом лечении папилломатоза гортани у взрослых. С целью разработки профилактических мероприятий рассмотрены возможные перспективы дальнейшего изучения распространенности и заболеваемости папилломатозом гортани, а также факторов, провоцирующих рецидивирование заболевания.

Juvenile onset recurrent respiratory papillomatosis is a lifelong benign squamous lesion associated with HPV infection, particularly HPV6 and HPV11 genotypes. These lesions are rare, but can lead to laryngeal obturations, which can cause disabling dyspnea, or transform into squamous cell carcinoma. The aim here is to provide an epidemiological, biological and clinical overview of this pathology, particularly in children, in order to understand the issues at stake in terms of research and the development of medical and therapeutic management tools.

This study was aimed at the evaluation of cell proliferation, p53 level and apoptotic index by immunohistochemical methods in canine oral papillomatosis. The study material comprised of tumor tissue samples taken from six dogs being admitted to the Pathology Department of Faculty of Veterinary Medicine, Kafkas University, Kars, Türkiye. Choice of immunohistochemical staining was avidin-biotin peroxidase method. Cases of canine oral papillomatosis, determined to have been caused by canine papillomavirus-1, were found to have a rather high cell proliferation index. Furthermore, all cases were immunohisto-chemically demonstrated to carry a mutant p53 gene. Despite the mutation of p53 gene, the shift in the Bax/Bcl-2 ratio of dogs diagnosed with tumor was in favor of the pro-apoptotic Bax gene. The apoptotic mechanism was determined to occur through both the caspase-dependent and caspase-independent pathways. While the lesions occupied the entire oral cavity in some cases, histopathologically, malignant transformation was not detected in any of the six cases.

Teat papillomatosis is reported to be one of the factors causing mastitis and milk losses in dairy cattle. Little is known about bovine papillomavirus (BPV) circulation in the European cattle population, and no reports can yet be found about its prevalence in Polish herds. In this study, 177 BPV-like lesions were collected from teats of 109 slaughtered cows. BPV was identified in 39 of the examined animals, using PCR amplification and Sanger dideoxy sequencing. In total, 10 BPV types were isolated, among which the most common were infections caused by types 8 and 7. Macroscopically, \"rice-grain\" type lesions dominated (76%) and were mainly found on one teat (57.4%). The diversity of BPV types causing teat papillomatosis in Polish cows seems to be large, with nine already known types isolated and a new putative type found. The spread of new types among the worldwide cattle population can be seen for the first time, as type 25 and so called isolates BPV42 and BPV43 were found in the European cattle population.

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Background: Respiratory papillomatosis is one of the common benign lesions of the airway that is often difficult to treat and carries significant morbidity. Bevacizumab is a monoclonal antibody that acts upon vascular endothelial growth factor receptor and is known to have an effect in respiratory papillomatosis. This study aims to systematically review the literature on efficacy of intralesional Bevacizumab in juvenile onset respiratory papillomatosis. Materials and methods. A systematic search of literature in various databases was conducted. The search was restricted to the English language, however, no restrictions were made regarding the date of publication keeping December 31st, 2020 as the last date of publication. We strictly complied with the PRISMA guidelines. Results. Of 145 articles analyzed, only 3 were selected as eligible and a total of twenty-one cases were evaluated. There was improvement in anatomic Derkay score after initiating intralesional Bevacizumb with reduction in the number of surgeries. Where reported, voice related functional outcomes also were also improved. No adverse effect related to the drug was reported. Conclusion: Intralesional Bevacizumab can be a promising efficacious, and safe adjuvant in the management of JORRP. Well-designed studies are further required in the future to prove its efficacy and safety over other adjuvants available.

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Vascular Endothelial Growth Factor has been demonstrated in squamous papillomas of Recurrent Respiratory Papillomatosis patients. This case series aimed at studying the feasibility and efficacy of systemic use of VEGF inhibitor Bevacizumab in advanced Juvenile Onset Recurrent Respiratory Papillomatosis (JORRP) patients. Three pediatric patients with advanced RRP were included in this study. A detailed bronchoscopic and radiological follow-up is presented. All patients responded well to the treatment. We conclude that systemic Bevacizumab can be tried as a feasible and rational adjuvant treatment in advanced JORRP patients.