Arquivos de Gastroenterologia, 2005 RACIONAL: A endosonografia anorretal constitui-se atualmente no principal exame de imagem para avaliar algumas das afecções anorretais. OBJETIVO: Demonstrar a importância do ultra-som tridimensional na avaliação anatômica do canal anal e no diagnóstico ...
Sthela Maria Murad Regadas +5 more
doaj +1 more source
Malignant Neoplasms of the Anal Canal [PDF]
Iranian Journal of Colorectal Research, 2013 Background Malignant neoplasms of the anal canal are rare, accounting for approximately 4% of all colorectal malignancies. Objectives The present study aimed to report the clinicopathological characteristics and treatment outcomes of 41 cases with ...
Shapour Omidvari +6 more
doaj +1 more source
Geometric Characterizations of Canal Hypersurfaces in Euclidean Spaces [PDF]
arXiv, 2021 In the present paper, firstly we obtain the general expression of canal hypersurfaces in Euclidean n-space and deal with canal hypersurfaces in Euclidean 4-space E4. We compute Gauss map, Gaussian curvature and mean curvature of canal hypersurfaces in E4 and obtain an important relation between the mean and Gaussian curvatures as 3Hrho = Krho^3-2.
arxiv
Effect of 0.2% nifedipine gel on anal canal pressures and postoperative pain: study following hemorrhoidectomy by open technique [PDF]
, 2007 INTRODUCTION: Hemorrhoids are very common and pain following their surgical treatment causes great suffering. Various alternatives have been studied for reducing postoperative pain.
Bassi, Deomir Germano +6 more
core +3 more sources
Sample entropy of sEMG signals at different stages of rectal cancer treatment [PDF]
Entropy 2018, 20(11), 863, 2018 Information theory provides a spectrum of nonlinear methods capable of grasping an internal structure of a signal together with an insight into its complex nature. In this work, we discuss the usefulness of the selected entropy techniques for a description of the information carried by the surface electromyography signals during colorectal cancer ...
arxiv +1 more source
Rare Case of Anal Canal Signet Ring Cell Carcinoma Associated with Perianal and Vulvar Pagetoid Spread [PDF]
Journal of Pathology and Translational Medicine, 2016 A 61-year-old woman was referred to surgery for incidentally found colonic polyps during a health examination. Physical examination revealed widespread eczematous skin lesion without pruritus in the perianal and vulvar area.
Na Rae Kim +9 more
doaj +1 more source
A new theory on the cause of anal fissure – impaction theory
Journal of Coloproctology, 2020 The internal hemorrhoid, rectal tumor, hypertrophic anal papilla, and secret fecal mass are regarded as the blocks embedded in the rectum. The above blocks hinder defecation, which will inevitably lead to excessive opening of the anal caliber.
Shaoming Chen, Qinghuan Yu
doaj
Cervical, anal and oral HPV detection and HPV type concordance among women referred for colposcopy
Infectious Agents and Cancer, 2020 Background Infection with human papillomaviruses (HPVs) can cause benign and malignant tumours in the anogenital tract and the oropharynx both in men and women.
Maria Nasioutziki +11 more
doaj +1 more source
Repeatability of innervation zone identification in the external anal sphincter muscle [PDF]
, 2010 Knowledge of the distribution of the innervation zones (IZs) of the external anal sphincter (EAS) may be useful for preventing anal sphincter incompetence during vaginal delivery.
Davico, E. +5 more
core +1 more source
Protocolo diagnóstico y seguimiento de la prevalencia e incidencia del virus del papiloma humano (vph) y las anormalidades citológicas de la mucosa anal de hombres que tienen sexo con hombres (hsh) e infección por el virus de la inmunodeficiencia humana (vih) [PDF]
, 2012 La citologia anal és un mètode sensible en el despistatge de la neoplàsia de canal anal i similar a la biòpsia dirigida mitjançant rectoscopi i tinció amb àcid acètic al 5%, sobretot en lesions d'alt grau de malignitat; a més de ser una prova adequada en
Rivero Rodríguez, Maria del Mar +2 more
core