Macroscopical anomalies

Articles

• caseous necrosis
  16 September 2005

  Caseous necrosis is a distinctive form of coagulative necrosis, is encountered most often in foci of tuberculous infection.
  The term caseous is derived from the cheesy white gross appearance of the area of necrosis.
  On microscopic examination, the necrotic focus appears as amorphous granular debris seemingly composed of fragmented, coagulated cells and amorphous granular debris enclosed within a distinctive inflammatory border known as a granulomatous reaction. Unlike coagulative (...)

• hypertrophy
  3 June 2003

  Definition: Hypertrophy refers to an increase in the size of cells, resulting in an increase in the size of the organ.
  Pathogenesis
  The hypertrophied organ has no new cells, just larger cells. The increased size of the cells is due not to cellular swelling but to the synthesis of more structural components.
  Cells capable of division may respond to stress by undergoing both hyperplasia and hypertrophy, whereas in nondividing cells (e.g., myocardial fibers), hypertrophy occurs.
  Nuclei (...)

• Peutz-Jeghers polyps
  14 February 2005

  Localization (by frequency)
  intestinal Peutz-Jeghers polyp jejunal Peutz-Jeghers polyp ileal Peutz-Jeghers polyp duodenal Peutz-Jeghers polyp
  colonic Peutz-Jeghers polyp
  gastric Peutz-Jeghers polyp
  Synopsis
  arborizing architecture (tree-like architecture)
  prominent branching of thick smooth muscle bundles admixed with collagen in polyp lamina propria
  epithelium mitotically active
  enterocytes (absorptive cells), goblet cells, argentaffin cells, Paneth (...)

• Congestion
  19 December 2005

  Definition: Congestion is a passive process resulting from impaired outflow from a tissue. It may occur systemically, as in cardiac failure, or it may be local, resulting from an isolated venous obstruction. The tissue has a blue-red color (cyanosis), particularly as worsening congestion leads to accumulation of deoxygenated hemoglobin in the affected tissues.
  Localization
  cutaneous congestion
  cerebral congestion
  visceral congestion
  renal congestion
  Exemples
  acute pulmonary (...)

• nodal necrosis
  8 March 2007

  Digital cases
  HPC:293 : Nodal cat scratch disease
  HPC:339 : Kikuchi adenitis (necrotizing histiocytic lymphadenitis)
  Definition: Necrosis in a lymph node.
  Etiology
  infectious nodal necrosis
  ischemic nodal necrosis
  tumoral nodal necrosis
  necrotizing adenitis infectious necrotizing adenitis mycobacterial necrotizing adenitis tuberculous necrotizing adenitis (Mycobacterium tuberculosis) Corynebacterium pseudotuberculosis necrotizing adenitis (#16940849#) Tularemia (...)

• umbilical cord stricture
  1 November 2004

  umbilical cord torsion, umbilical cord constriction

• hemihypertrophy
  21 November 2005

  Etiology
  idiopathic hemihypertrophy
  Beckwith-Wiedemann syndrome (BWS)

• splenic hypoplasia
  12 January 2006

  vanishing spleen syndrome

• heterotopias
  17 March 2006

  heterotopia
  Definition: Heterotopia refers to the displacement of an organ or part of an organ or a tissue from its normal position.
  Types
  tissular heterotopia gastric heterotopia pancreatic heterotopia splenic heterotopia
  organ heterotopia (ectopic organ )
  See also
  ectopic organ
  choristoma

• epulis
  15 December 2004

  (gr. epi-: above; oulon: gingiva)

0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | ... | 290