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A growth pattern of epithelial tumors in which the proliferating epithelial cells grow outward from a surface, accompanied by vascularized cores of connective tissue, to form a branching structure.



a benign tumor of man and animals; its basic structural element is a connective-tissue papilla covered with epithelium and containing vessels. The growth of the papillae in various directions sometimes gives a papilloma the appearance of a cauliflower. The presence of numerous papillomas is called papillomatosis. Papillomas are most commonly found on the skin, although they sometimes occur on mucous membranes. In man, they may be congenital or may result from chronic inflammatory irritation. Some papillomas are viral in origin, for example, those of the sexual organs. The recommended therapy is surgical removal.

Papillomatosis in animals is caused by locally specific viruses. It affects cattle, horses, dogs, and rabbits and occasionally goats, sheep, and wild animals. The infection is caused by diseased animals; natural infection results from contact between diseased and healthy animals. The disease is long in duration. Isolated coral-like papillomas appear and then spread. Their surface is dry, horny, and cracked. When injured, papillomas bleed and become infected and ulcerous. Diagnosis is based on clinical and histological examination. Treatment generally consists of surgical removal.


References in periodicals archive ?
This would also be the case if it were a papilloma virus, so the next step in my mind would be to attempt surgical excision.
The plethora of histopathological presentations of SP is further complicated by malignant transformation in about 11% of patients of IP, the malignancy can be synchronous or may appear after resection of papilloma (metachronous).
71% of cases followed by Squamous cell papilloma, inverted papilloma.
10) However, we refer to IDPs with foci of architectural and cytologic atypia that quantitatively and qualitatively fail to fulfill criteria for the diagnosis of DCIS as papilloma with atypia or atypical papilloma; this diagnosis is equivalent to that of atypical ductal hyperplasia elsewhere in the breast.
Treatment outcomes in the management of inverted papilloma : An analysis of 160 cases.
KEYS WORDS: Nipple Discharge, Breast Intraductal Papilloma, Duct Ectasia, Microdochectomy, Ductal Carcinoma In Situ (DCIS), Lobular Carcinoma In Situ LCIS.
Exophytic papilloma shows delicate fibrovascular cores covered by epithelium that varies between three types: squamous; ciliated, pseudostratified columnar respiratory type epithelium; and transitional epithelium (figure 2).
Pathology revealed urethral squamous papilloma (Fig.
On clinical examination, oral papilloma were observed in buccal cavity along with difficulty in mastication as warts were present on tongue and inner side of lips.
BEIRUT: Medical organizations announced Thursday they are working to increase the number of people in the country vaccinated against dangerous viruses such as Human Papilloma Virus and rotavirus.