What's the difference between lesion and scar?

Lesion


Definition:

  • (n.) A hurt; an injury.
  • (n.) Loss sustained from failure to fulfill a bargain or contract.
  • (n.) Any morbid change in the exercise of functions or the texture of organs.

Example Sentences:

  • (1) The telencephalic proliferative response has been studied in adult newts after lesion on the central nervous system.
  • (2) To quantify the size of the lesion in mice, the area of the infarct on the brain surface was assessed planimetrically 48 h after MCA occlusion by transcardial perfusion of carbon black.
  • (3) An effective graft-surveillance protocol needs to be applicable to all patients; practical in terms of time, effort, and cost; reliable; and able to detect, grade, and assess progression of lesions.
  • (4) However, CT will be insensitive in the detection of the more cephalic proximal lesions, especially those in the brain stem, basal cisterns, and skull base.
  • (5) Weddellite calcification was associated with benign lesions in 16 cases, but incidental atypical lobular hyperplasia and lobular carcinoma in situ were present, each in one case.
  • (6) One must be suspicious of any gingival lesion, particulary if there is a sudden onset of bleeding or hyperplasia.
  • (7) The cross sectional area of the aortic lumen was gradually decreased while the length of the stenotic lesion gradually increased by using strips with different width.
  • (8) A total of 555 caries lesions were registered on proximal surfaces, 49.1% being primary lesions in the enamel, 21.4% primary lesions into the dentin and 29.5% secondary lesions.
  • (9) Hypertensive disorders in pregnancy are frequently accompanied by deteriorated renal functions and by pathological lesions in the glomeruli.
  • (10) Pleural or subpleural lesions were found in all cases.
  • (11) These findings suggest that clonidine transdermal disks lower blood pressure in hypertensive patients, but produce local skin lesions and general side effects.
  • (12) The results also indicate that small lesions initially noted only on CT scans of the chest in children with Wilms' tumor frequently represent metastatic tumor.
  • (13) The lesion (10.6 X 9.8 mm) was a well-defined ellipsoid granuloma due to a foreign body with a central zone of necrosis surrounded entirely by a fibrous wall.
  • (14) Macroscopic lesions included mild congestion of the gastric mucosa and focal consolidation of the lung.
  • (15) Periosteal chondroma is an uncommon benign cartilagenous lesion, and its importance lies primarily in its characteristic radiographic and pathologic appearance which should be of assistance in the differential diagnosis of eccentric lesions of bones.
  • (16) We report on a patient, with a CT-verified low density lesion in the right parietal area, who exhibited not only deficits in left conceptual space, but also in reading, writing, and the production of speech.
  • (17) Differentiation between these two types of lesions is of utmost importance since the surgical approach will be different.
  • (18) In the upper limb and facial forms of familial amyloidotic polyneuropathy first recorded in Swiss and Finns respectively, the differences in their patterns of neurological disease and ocular lesions could be the result of their amyloids deriving from proteins other than prealbumin.
  • (19) In the present study, the expression of type IV collagen associated with the basal membrane (BM) was studied histochemically (indirect immunoperoxidase-antiperoxidase) in cervical human papillomavirus (HPV) lesions (diagnosed using in situ DNA hybridization) of different grades.
  • (20) Patients with sarcoidosis that present only cutaneous lesions are uncommon but have been described.

Scar


Definition:

  • (n.) A mark in the skin or flesh of an animal, made by a wound or ulcer, and remaining after the wound or ulcer is healed; a cicatrix; a mark left by a previous injury; a blemish; a disfigurement.
  • (n.) A mark left upon a stem or branch by the fall of a leaf, leaflet, or frond, or upon a seed by the separation of its support. See Illust.. under Axillary.
  • (v. t.) To mark with a scar or scars.
  • (v. i.) To form a scar.
  • (n.) An isolated or protruding rock; a steep, rocky eminence; a bare place on the side of a mountain or steep bank of earth.
  • (n.) A marine food fish, the scarus, or parrot fish.

Example Sentences:

  • (1) The authors examined an eye obtained post-mortem from a patient with chronic granulomatous disease of childhood and clinically apparent chorioretinal scars.
  • (2) 14 patients with painful neuroma, skin hyperesthesia or neuralgic rest pain were followed up (mean 20 months) after excision of skin and scar, neurolysis and coverage with pedicled or free flaps.
  • (3) In spite of the presence of scar tissue following rhytidectomy, this procedure has been quite successful because of the rich blood supply in that area.
  • (4) Following a dosage of 300,000 IU streptokinase the lysis was stopped because of severe bleeding from the urethrotomy scar.
  • (5) Differences in scar depression also supported the idea of more stretching in the Dexon group.
  • (6) These findings support the hypothesis that the presence of FSC tissue will have an effect on the persistence of glial scar tissue in a chronic lesion site as well as limit the extent to which a new scar is formed in response to a second injury to the spinal cord.
  • (7) Thirty patients required a second operation to an area previously addressed reflecting inadequacies in technique, the unpredictability of bone grafts, and soft-tissue scarring.
  • (8) The observed clinical findings include scarring of the face and hands (83.7%), hyperpigmentation (65%), hypertrichosis (44.8%), pinched facies (40.1%), painless arthritis (70.2%), small hands (66.6%), sensory shading (60.6%), myotonia (37.9%), cogwheeling (41.9%), enlarged thyroid (34.9%), and enlarged liver (4.8%).
  • (9) To test this hypothesis 30 Wistar rats were subjected to laparotomy and colonic resection and treated with 5-Fluorouracil or Mitomycin C. The bursting strength of the abdominal scars and the colonic anastomotic bursting pressure revealed some interference in the rats treated with 5-Fluorouracil (Student's t test P less than 0.05) but none in the case of Mitomycin C. This preliminary study deserves to be followed up.
  • (10) The patient suffers little inconvenience, has a very small scar and is in hospital only a short time.
  • (11) Skin affected by a burn cancer is scarred, ulcerated, and often appears as erythema ab igne clinically in adjacent skin.
  • (12) Extraction tools included flexible, telescoping sheaths advanced over the lead to dilate scar tissue and apply countertraction, deflection catheters, and wire basket snares.
  • (13) The ensuing scars were similar with respect to scar width and the amount of collagen in the scar.
  • (14) Several stages in its histogenesis may be discerned: I. focal necroses of hepatic cells associated with their invasion with lister Listeria; 2. appearance of cellular elements around the foci of necroses with subsequent formation of granulemas consisting mainly of leucocytes and lymphoid cells; 3. development of necrobiotic changes in the central areas of granulemas with concomitance of exudative processes; 4. organization of necrotic foci with subsequent scarring.
  • (15) This method keeps the fracture closed and leaves no scar.
  • (16) Regarding ureters read as true positives on indirect study, if that ureter has ever shown reflux at any time, or if it drained a scarred kidney specificity was improved to 97% without changing the sensitivity.
  • (17) Both acquired defects were covered by two different cross-finger flap techniques, despite extensive scarring of the adjacent finger.
  • (18) After the completion of rejection reaction, inflammation finally induced scarring or necrosis of the tracheal allograft, resulting in asphyxia or perforation.
  • (19) Autopsy findings showed no scar formation of his testes, and the primary lesion was finally diagnosed to be in the anterior mediastinum.
  • (20) Following this combination procedure the patients were relieved completely of obstructive jaundice and right upper quadrant pain, leaving only small trocar insertion scars made during the short course of hospitalization.