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Intravascular papillary endothelial hyperplasia (Masson's hemangio-endotheliome vegetant intravasculaire, Masson's lesion, Masson's pseudoangiosarcoma, Masson's tumor, papillary endothelial hyperplasia) Juvenile hyaline fibromatosis (fibromatosis hyalinica multiplex juvenilis, Murray–Puretic–Drescher syndrome)
Hyperplasia of the breast – "Hyperplastic" lesions of the breast include usual ductal hyperplasia, a focal expansion of the number of cells in a terminal breast duct, and atypical ductal hyperplasia, in which a more abnormal pattern of growth is seen, and which is associated with an increased risk of developing breast cancer.
Epidermolytic acanthomas are a cutaneous condition characterized by discrete keratotic papules in adults. [1] Epidermolytic acanthomas may exist in groups or as solitary lesions. They range in size from 1-2 mm. They usually affect the trunk, extremities, scrotum, or vulva. They are sometimes itchy. The cause of epidermolytic acanthoma is unknown.
Epidermodysplasia verruciformis (EV) is a skin condition characterised by warty skin lesions. [1] It results from an abnormal susceptibility to HPV infection (HPV). It is associated with a high lifetime risk of squamous cell carcinomas in skin. [1]
Guttate psoriasis is most commonly seen in children and young adults and diagnosis is typically made based on history and clinical exam findings. [23] Skin biopsy can also be performed which typically shows a psoriasiform reaction pattern characterized by epidermal hyperplasia with elongation of the rete ridges. [23]
Examining multiple deeper levels is recommended if initial cuts do not correlate well with the clinical history. [2] Psoriaform dermatitis typically displays: [2] Regular epidermal hyperplasia, elongation of the rete ridges, hyperkeratosis, and parakeratosis. Usually:A superficial perivascular inflammatory infiltrate
Because of the differences between mucous membranes and the skin (e.g., keratinizing mucosa does not have a stratum lucidum and non keratinizing mucosa does not have this layer or normally a stratum corneum or a stratum granulosum), sometimes specialized texts give slightly different definitions of hyperkeratosis in the context of mucosae.
Heck's disease, also known as Focal Epithelial Hyperplasia, is an asymptomatic, benign neoplastic condition characterized by multiple white to pinkish papules that occur diffusely in the oral cavity. [1] [2]: 411 It can present with slightly pale, smooth or roughened surface morphology. It is caused by the human papilloma virus types 13 and 32. [3]