Definition of villous in English:

villous

adjective

Anatomy
  • 1(of a structure, especially the epithelium) covered with villi.

    • ‘Finnish doctors say that examining villous tips in the small intestine for lymphocyte infiltration is a good way to distinguish people who have early signs of coeliac disease from those without.’
    • ‘This can be confirmed by chorionic villous sampling or amniocentesis.’
    • ‘Increased perivillous fibrin was diagnosed when all nonperipheral placental sections showed that 5% or more of the terminal villi in the half of the villous parenchyma bordering the basal plate were enmeshed in a fibrinoid matrix.’
    • ‘Colonoscopy revealed a soft, delicate, villous mass 14 cm from the anal verge.’
    • ‘In some instances, multiple tissues from individual specimen were analyzed, including amniotic membrane, chorionic membrane, chorionic villous stroma, and trophoblast, as well as fetal tissues.’
    • ‘Parameters for intestinal mucosal morphometry (number of villi, villous height, mucosal thickness) and number of mucous containing cells were determined.’
    • ‘Researchers believe that simulated amniotic fluid, which contains enteric growth factors, promotes villous development.’
    • ‘There was no evidence of villous abnormality or parasites on duodenal biopsy.’
    • ‘The lesion measured approximately 4.5 cm in diameter and was composed predominantly of villous and branching papillary patterns.’
    • ‘The relationship between placental development and villous proliferation in the vessels is presented.’
    • ‘Gluten causes the intestinal mucosa to lose its villous structure and absorptive capacity.’
    • ‘Afterwards the samples were stained with haematoxylin-eosin to evaluate the number of villi, villous height and mucosal thickness and with PAS to identify mucous containing cells.’
    • ‘It was a beautiful, round, full placenta: dark red on one side - the villous side, which had been attached to the wall of my womb - and glistening silver on Jacob's side, due to the covering of his membranes.’
    • ‘But that's the situation you've got at the moment with amniocentesis and chorionic villous sampling; the only difference in this technology that it's before you've even become pregnant.’
    • ‘They are also the most common adenomatous polyps (the villous pattern is the least common).’
    • ‘The architectural changes involve differences from normal structure, such as clustering and crowding of tubules, an exaggerated villous surface pattern, or the appearance of bridges of cells that cross lumens.’
    • ‘The duodenal mucosa showed severe villous atrophy but no subepithelial collagen deposition.’
    • ‘This can be because of the material itself (sorbitol, lactose, etc) or due to disruption of the villous structure of the small intestine.’
    • ‘An aliquot of fetal cells was obtained from fetal villous tissue in each case, and the samples were examined by cytogenetic techniques.’
    • ‘A chorionic villous sampling test involves taking a sample of tissue from the placenta to measure certain markers in the blood.’
    1. 1.1Medicine
      (of a condition) affecting the villi.
      ‘villous atrophy’
      • ‘In contrast to those of the large bowel, benign villous adenomas of the urinary tract are rare.’
      • ‘IgA antiendomysial antibody testing has been reported to be 100 percent sensitive in patients with total villous atrophy.’
      • ‘The data are less clear for asymptomatic screen-identified patients, particularly those who have truly silent celiac disease or who do not have fully developed villous atrophy.’
      • ‘In their article, 4 of 5 cases were found to have villous or tubulovillous adenomas adjacent to the highly anaplastic carcinomas but with no obvious transition.’
      • ‘From the data presented in Table 3, it appears that a close interlesional association exists between HEV and villitis of unknown etiology, fetal-placental vessel thrombi, villous fibrosis, and erythroblastosis.’
      • ‘Approximately 10 percent of biopsynegative villous adenomas contain invasive cancer, even if those with induration, ulceration, and other signs of malignancy are excluded.’
      • ‘Subsequent endoscopy and biopsy showed subtotal villous atrophy.’
      • ‘Many apoptotic bodies were present, but mitosis was not prominent. sections demonstrating small intestinal mucosa adjacent to tumor showed no evidence of villous atrophy or crypt hyperplasia.’
      • ‘The villous adenoma from this patient demonstrated focal high-grade dysplasia but no apparent adenocarcinoma.’
      • ‘Tubular polyps are pedunculated, whereas villous adenomatous polyps have broad bases and are larger.’
      • ‘Repeat gastroscopy showed macroscopic features consistent with coeliac disease and duodenal biopsies showed total villous atrophy.’
      • ‘This becomes especially important when there is limited biopsy material from a distant metastasis that shows a small cell carcinoma and a colonic biopsy specimen that reveals a villous adenoma.’
      • ‘The morphologic differential diagnosis of mature B-cell neoplasms with cytoplasmic projections includes splenic lymphoma with villous lymphocytes and hairy cell leukemia.’
      • ‘Primary Infarcts.-Discrete areas of ischemic villous necrosis (primary infarcts) reflect obstruction to maternal - placental blood flow.’
      • ‘Thus, detection of adenomatous / villous polyps is being studied using a variety of techniques including barium enema, colonoscopy and CT.’
      • ‘Results.-Lesions that were frequently coexistent in HEV-affected placentas included villitis of unknown etiology, chorionic thrombi, villous fibrosis, erythroblastosis, and primary infarcts.’
      • ‘Other primary epithelial tumors of the urachus include villous adenoma, transitional cell carcinoma, and, rarely, squamous cell carcinoma.’
      • ‘Coeliac disease is characterised histologically by total or subtotal villous atrophy.’
      • ‘The vascular endothelium was destroyed by villous proliferation and trophoblastic invasion in this vessel.’
      • ‘Biopsy itself, when used with a strict cutoff requiring villous atrophy, appears to have high specificity but poor sensitivity.’
    2. 1.2Botany
      Shaggy.
      • ‘The anthers are villous and the ovary is densely hispid.’

Pronunciation:

villous

/ˈviləs/