Respiratory papilloma is a rare lesion that arises in the larynx, trachea and bronchus. We describe a patient with laryngeal papilloma that spread to the trachea and which was effectively treated by Nd-YAG laser. Two years after the initial treatments of the laryngeal and tracheal papillomas, a recurrent lesion (solitary papilloma) was observed on the membranous portion of the trachea. We exami...

A case of Bowen's disease arising on the medial part of the first metatarsal bone of an 81-year-old Japanese woman is described. Histopathologically, proliferation of atypical cells was found throughout the epidermis. Electronmicroscopy revealed virus particles 40-50 nm in diameter in the nuclei of tumour cells at the granular cells just on or below the horny layer. Positive bands were obtained...

[n diagnostic iieuropathology, the histological distinctions betweeii nonn"l choroid plexus, typical aiid atypical choroid plexus papilloma aiid choroid plexus carciiioma may cause difficulties. [mmunohistocheinistry was applied for proliferatiiig cell nuclear antigeii oii 7 samples of nonnal choroid plexus, 12 typical papillomas, 10 atypical papillomas, and 3 choroid plexus carcinomas to evalu...

Oral squamous cell carcinoma is the sixth most common malignancy worldwide. In Bangladesh, it comprises 20% of the whole body malignancies. Several studies found that 15% to 25% of oropharyngeal cancer cases are associated with human papilloma virus (HPV). This study is done to find the association of human papilloma virus subtypes, particularly HPV type 16 and HPV type 18, with the oral squamo...

The virus-induced papillomas of cottontail as well as domestic rabbits regress completely within a few weeks when exposed to 5,000 r of x-ray irradiation. The x-rays do not immediately kill the papilloma cells, but lead to death by inhibiting cellular division and producing pathological changes in the cells which then continue to differentiate. The virus associated with the growths, however, no...

Computational investigation of marine bioactive compounds against E6 oncoprotein Human Papilloma Virus-HPV16Pavithra Dhamodharan, Nirmaladevi Ponnusamy, Rajasree Odumpatta, Sajitha Lulu, Mohanapriya Arumugam

Background: Verruca is a benign proliferation of the skin and mucous membranes caused by Human Papilloma Virus (HPV)

Laryngeal papillomas are benign tumors caused by human papillomaviruses types 6 and 11. This study addressed alterations in levels of signal transduction from the epidermal growth factor receptor (EGFR) in papillomas and cultured papilloma cells compared to normal tissue and cells. Mitogen-activated protein kinase (MAPK) was activated to a greater extent, phosphotyrosine was more abundant, and ...