(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).
(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.