Hyperplastic polyps of the colorectum are heterogeneous lesions, a subset of which is now regarded as the precursor of colorectal cancer with DNA microsatellite instability. Some authors have distinguished this subset from classic hyperplastic polyps and have introduced the term "sessile serrated adenoma". These lesions frequently show BRAF mutation and DNA methylation. This personal perspectiv...

Peripheral ossifying fibroma is a reactive lesion arising from periodontal cells in response to local irritation with females second decade of their life are more affected and maxillary anterior region predilection. Clinical appearance erythmatous or pink colour large lesions generally smooth. Lesion usually not exceed 1.5 cm. Underlying bone sometimes shows loacalized erosion. Treatment involv...

Scanning and transmission electron microscopical investigations were carried out on explanted human aortic and mitral valves to study the prevalence of hyperplastic and degenerative lesions in acquired valvular dysfunction. Biopsies were taken from 67 aortic and 23 mitral valves. All of the valves examined showed degenerative lesions including a loose binding of the endothelial cells, a partial...

Gastric hyperplastic polyps are generally considered benign lesions, although rare cases of adenocarcinoma have been reported. Although, the underlying mechanism of carcinogenesis in gastric hyperplastic polyps is still uncertain, most malignant polyps are seen to originate from dysplastic epithelium rather than from hyperplastic epithelium. Herein, we report the case of a woman diagnosed with ...

BACKGROUND AND AIMS Reactive hyperplasias (RHs) are common oral mucosal lesions caused by irritation of the mu-cosa. The aim of this study was to evaluate the frequencies of various types of oral RHs in a university clinic. MATERIALS AND METHODS Oral RH cases, undergone biopsy in a four-year period, were studied retrospectively. Data including age and gender as well as the location and clinic...

CONTEXT Differential diagnosis of hyperplastic vs adenomatous lesions is of crucial importance on the daily practice of colonoscopy. OBJECTIVES This study aimed at quantifying digital morphometric characteristics of colonoscopic images obtained with magnification and chromoscopy of three different types of colonic lesions: hyperplastic, adenomas and carcinomas, and the normal mucosa surroundi...

The present study proposed to systematically review case reports of metastasis the oral cavity and compile epidemiological, clinical, radiological, histopathological features, intending identify common aspects that may favor early diagnosis such condition. Articles were found by searching following databases: PubMed; EMBASE; LIVIVO; Web Science; LILACS; Scopus SciELO. search was carried out in ...

Calcifying epithelial odontogenic tumors are rare odontogenic neoplasms that account for approximately one percent of all odontogenic tumors. Extra osseous variant is very rare with very few cases being reported in literature Peripheral Calcifying epithelial odontogenic tumor (CEOT) commonly resemble oral hyperplastic or reactive lesions and are histologically similar to their intraosseous coun...

a 3-month-old short haired pointer with crusty local alopecia around the eyes was presented to smallanimal hospital of tehran university. scraping and biopsy were obtained from lesions of affected area.notoedres sp. was diagnosed in skin scraping by parasitologic examination. furthermore, histopathology oflesions demonstrated moderate hyperplastic epidermis, parakeratosis and acanthosis.