What's the difference between involucrum and sequestrum?

Involucrum


Definition:

  • (n.) See Involucre.
  • (n.) A sheath which surrounds the base of the lasso cells in the Siphonophora.

Example Sentences:

  • (1) The left femur, with pathologic fracture and involucrum, and the right femur, tibia and fibula were most severely affected.
  • (2) Sequestrectomy should be reserved for cases where a sequestrum and adequate involucrum can be seen on X-ray.
  • (3) Half the defects were due to removal of the sequestrum before the involucrum had formed.
  • (4) If the involucrum fails to form we reconstruct the tibia as soon as possible after sequestrectomy.
  • (5) Hyperkeratosis was characterized by strong positive staining for involucrum in spinous and granular cell layers.
  • (6) In chronic stage, we suggest sequestrectomy only after adequate involucrum has formed properly.
  • (7) In nine of the patients in Group I (four tibial and five femoral lesions), an involucrum bridged the osseous defect, indicating that the periosteal tube had not been destroyed.
  • (8) The graft was sutured to the epididymal involucrum, punctured through the scrotal skin by an injection needle and aspirated spermatozoa accumulated in the internal cavity, and subjected to AIH.
  • (9) The fresh and frozen allogeneic transplants were accepted by the host as was evidenced by the involucrum formations.

Sequestrum


Definition:

  • (n.) A portion of dead bone which becomes separated from the sound portion, as in necrosis.

Example Sentences:

  • (1) The second case concerns a 11 year-old boy who, after having complained from pain of the right wrist during 2 weeks, presented with swelling and on X-ray films a picture of metaphyso-epiphyseal lysis and an aspect of sequestrum in its center.
  • (2) After platinectomy and excision of a bony sequestrum, there remained only a large fossa with an area equivalent to 3 times that of a usual fenestra ovale.
  • (3) Direct local thrombolysis with low-dose Urokinase resulted in partial recanalisation with an excellent clinical result despite the persistence of an endovenous sequestrum situated at the catheter tip, a sequela of previous thrombosis.
  • (4) This may be explained by a different condition of the adipocytes in the sequestrum.
  • (5) The retained eruption sequestrum may lead to pericoronitis or pit and fissure caries.
  • (6) Unlike a simple fungus ball (the saprophytic form of aspergillosis), the rounded density of invasive pulmonary aspergillosis consists of sequestrum of devitalized lung tissue owing to blood vessel invasion by Aspergillus hyphae.
  • (7) The most frequent pulmonary cysts in this series were the bronchogenic and patients with parasitic cysts, lobe emphysema and pulmonary sequestrum were excluded.
  • (8) A slight loss of crestal alveolar bone occurred in the experimental areas and a bone sequestrum formed in one instance.
  • (9) Complications included skin loss (5 horses), laminitis of the affected limb (2 horses), laminitis of the contralateral limb (4 horses), osteomyelitis and sequestrum formation (2 horses), and bacteremia (1 horse).
  • (10) Subligamentous sequestrum represents relative indication.
  • (11) A case of osteomyelitis with a typical sequestrum of the alveolar bone, occurred three months after the extraction of the corresponding tooth, is reported.
  • (12) In Patient 1, septic arthritis and juxta-articular osteomyelitis with sequestrum formation were demonstrated by CT four weeks before abnormalities were shown on a roentgenogram.
  • (13) The only role of surgery is incision and drainage of a post-auricular abscess and removal of sequestrum if present.
  • (14) Sequestrectomy should be reserved for cases where a sequestrum and adequate involucrum can be seen on X-ray.
  • (15) Protein concentration was determined, using the Bradford technique, in tears from cats with normal corneas and from cats with corneal sequestrum.
  • (16) Two patterns occur: a localized involvement of the tympanic plate which resolves after the spontaneous separation of a sequestrum of bone, and a more diffuse necrosis of the temporal bone with a high risk of involvement of adjacent structures, in particular the brain, labyrinth and facial nerve and to a lesser extent the temporomandibular joint and the parotid gland.
  • (17) On the border between the two areas hypervascularity produces a zone of fragility where microfractures develop with detachment of a sequestrum.
  • (18) The radiographs may demonstrate an eggshell appearance, a sequestrum, marked sclerosis, or cystic changes.
  • (19) In most cases, SI analysis of nonenhanced T1- and T2-weighted images allows the differentiation of hypervascularized viable tissue from hypovascularized necrotic tissue of the sequestrum.
  • (20) The infant presented with Livedo reticularis and an ulcer on the right forearm since birth; the underlying radius and ulna showed osteomyelitic changes with sequestrum formation and a pathological fracture.

Words possibly related to "involucrum"

Words possibly related to "sequestrum"