Ameloblastoma have a high recurrence rate, and because of their biological tendency towards local invasion are considered borderline tumors. Despite this, reports of metastasis of these tumors are rare. This report pr...
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Ameloblastoma have a high recurrence rate, and because of their biological tendency towards local invasion are considered borderline tumors. Despite this, reports of metastasis of these tumors are rare. This report presents a patient with mandibular ameloblastoma that recurred 29 years after surgery and metastasized to both lungs. Because of the large range of the area of metastasis, complete surgical resection of the tumors was impossible. After confirming the diagnosis by biopsy of the pulmonary lesions the pulmonary metastases were not treated *** over 4 years showed no obvious change in lung metastasis. Recent cases are summarized and analyzed in this paper, with respect to its occurrence,pathological types, methods of treatment and other related aspects.
To review a case of severe and extensive CCNF worsened by hepatitis and diabetes mellitus. This report presents a 32-year-old man with severe and extensive craniocervical necrotizing fasciitis(CCNF) worsened by hepati...
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To review a case of severe and extensive CCNF worsened by hepatitis and diabetes mellitus. This report presents a 32-year-old man with severe and extensive craniocervical necrotizing fasciitis(CCNF) worsened by hepatitis and diabetes mellitus. He was treated aggressively with early diagnosis by CT scan,broad-spectrum antibiotics, multidisciplinary treatment, multiple surgical debridement,essential intensive medical care and efficient emergency services. Observation over 6 months showed no complications developed. Recent cases are summarized and analyzed in this paper, with respect to its occurrence, methods of treatment and other related aspects. In conclusion, early and aggressive surgical treatment and intensive medical care are essential for patients with CCNF worsened by immunosuppression or systemic disease.
Estrogen deficiency has been proposed as a risk factor for alveolar bone loss, but wether estrogen will influcence the bone rebuilting process during orthodontic tooth movement and what the mechanisms involved remain ...
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Estrogen deficiency has been proposed as a risk factor for alveolar bone loss, but wether estrogen will influcence the bone rebuilting process during orthodontic tooth movement and what the mechanisms involved remain unclear. The present study aims to provide new information that may elucidate the modulatory effect of estrogen on the bone-resorbing cytokines RANKL and its anti-resorptive factor OPG secrected by HPLFs which are already force-stimulated. The expression of OPG mRNA is rising after mechanical loading either with or without stimulated by estrogen before. But HPDLcells exposured to estrogen for 24 hours before loaded tend to express more OPG mRNA. Compared with the no-estrogen group, the inhibit trend of RANKL mRNA is much more apparent in with-estrogen group. Moreover,estrogen and mechanic force time-dependently increased OPG expression and attenuated the RANKL expression.
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