Sequestrum

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Related to sequestra: osteomyelitis

sequestrum

[si′kwes·trəm]
(medicine)
A piece of dead or detached bone within a cavity, abscess, or wound.

Sequestrum

 

a piece of tissue that has died as a result of a circulatory disorder and become separated from the surrounding healthy tissue. A sequestrum may develop, for example, during osteomyelitis. Sequestration may also occur in lung, tendon, or muscle tissue. While in the body, a sequestrum continuously promotes the suppurative process. A sequestrum may be discharged from the body with the flow of pus; sometimes, however, it is necessary to remove it surgically

References in periodicals archive ?
Samples of bone, soft tissue and bone sequestra should be sent for histological analysis after biopsy or surgical debridement, as these can confirm the diagnosis of osteomyelitis.
The typical radiographic appearances of osteoarticular tuberculosis in the extremities, the second most common form after tuberculous spondylitis, are metaphyseal or epiphyseal lesions that lack sclerosis, sequestra, or periosteal bone reaction.
In the chronic phase, sequestra within the area appear radiopaque.
The fracture gaps were bridged regularly and sequestra were rarely observed.
Com o influxo exagerado de calcio, a mitocondria torna-se um alvo importante, pois, na tentativa de interromper os potenciais eventos letais, ela sequestra esse ion (SANTO-DOMINGO E DEMAUREX, 2010).
The differential diagnosis includes a foreign body, rhinolith, inflammatory lesion with calcification secondary to syphilis, tuberculosis or fungal infection, bony sequestra, neoplasm, exotosis and odontoma.
During subsequent stages, the lesion invades deeper into mesenchymal tissues, leading to accumulation of necrobiotic keratin debris in the newly formed central cavity; bone erosion and bone sequestra may also occur.
Ja que estes tinham dificuldade em compreender um poder publico que, por um lado, chama e respeita, enquanto, por outro, lacra e sequestra os equipamentos.
Biofilms develop preferentially on inert surfaces or on dead tissue, and occur commonly on medical devices and fragments of dead tissue such as sequestra of dead bone; they can also form on living tissues, as in the case of endocarditis [6].
The presence of associated cortical destruction, sinus tracts, low-intensity sequestra, cloaca, and adjacent soft tissue inflammatory signal changes can also be evaluated with MR.
The first group had uncomplicated recoveries, with complete return of function and no clinical or radiological signs of unresorbed sequestra.
When established, bacteria produce a local inflammatory reaction that promotes bone necrosis and the formation of sequestra.