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In a retrospective study on the effects of an absolute augmentation of the atrophic alveolar ridge with hydroxylapatite, the patient satisfaction rate with the present denture and the loss in height of the augmentation were assessed. Most patients indicated an improved functioning with their dentures after the operation; nevertheless, the patient satisfaction rate was lower than expected. Additionally a concerned loss in height of the augmentation was demonstrated over the evaluation period of 3.5 years. In selected cases, however, the hydroxylapatite augmentation of the atrophic alveolar ridge may still have its value in preprosthetic surgery. 相似文献
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Rittersma SZ van der Wal AC Koch KT Piek JJ Henriques JP Mulder KJ Ploegmakers JP Meesterman M de Winter RJ 《Circulation》2005,111(9):1160-1165
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SZ Koh HY Tiong S Wang K Madhavan 《Annals of the Royal College of Surgeons of England》2013,95(4):e71-e74
Solitary fibrous tumours are infrequent neoplasms based in the pleura that are predominantly benign with malignant pathology and behaviour described in 10–36% of cases. Extrathoracic solitary fibrous tumours (ESFTs) have been considered separately to their intrathoracic counterparts and comprise a third of all solitary fibrous tumours. The extrathoracic location was identified as an adverse prognostic factor for local recurrence but not for metastatic disease. So far, there have not been any reports of solitary fibrous tumours demonstrating caval infiltration. We present a case of a benign ESFT infiltrating into the perirenal inferior vena cava. Together with extrauterine leiomyomas, ESFTs should also be considered as a differential diagnosis for the rare benign lesions invading the inferior vena cava. 相似文献
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F Haque ST Fazal SA Ahmad SZ Abbas S Naseem 《Journal of Medical Imaging and Radiation Oncology》2006,50(1):63-65
Primary osteogenic sarcoma of the skull is an exceedingly rare condition. An adult male patient is described, who had a painless swelling in the right forehead that had rapidly enlarged in the previous 6 months. Radiological investigations showed a large destructive mass lesion involving the right side of the frontal bone with extension into the frontal sinus, causing marked extradural compression of brain parenchyma. Histopathological examination confirmed the lesion to be primary osteogenic sarcoma. 相似文献
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CTLA4-Ig是一种融合免疫球蛋白,可以选择性地阻断CD28与B7的信号传导通路,导致T细胞免疫失能,诱导对特异性抗原的免疫耐受. 本文介绍了其生物学特性、免疫诱导耐受机制及在异体移植方面的研究进展和局限性,其在异体移植方面展示了良好的应用前景. 相似文献