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Biomedical subjects

G Renzi

Publications and source records attributed to G Renzi.

53 records · Page 3Linked to original sources
PubMedDate not supplied

Surgical treatment of fibrous dysplasia of the cranio-maxillo-facial area. Review of the literature and personal experience form 1984 to 1999.

OBJECTIVE: The aim of this study is to report personal experience on the evolution of the therapeutical approach and surgical treatment in 66 patients with fibrous dysplasia (FD) of the cranio-maxillo-facial area. METHODS: From January 1984 to December 1999, 66 cases of FD of the cranio-maxillo-facial area were diagnosed. 21 patients were still growing (under 17 years), while 45 were adults (over 17 years). 50 (75.7%) patients showed FD in monostotic form; 15 (22.7%) patients showed FD in polyostotic form; one (1.51%) patient affected by Mc Cune-Albright Syndrome presented the involvement of the left hemimandible. In 24 (36.3%) patients the clinical onset of the disease was insidious, lacked evident symptomatology and the diagnosis was fortuitous. The remaining 42 (63.6%) patients showed different signs and symptoms according to the location of the pathology. RESULTS: In this time the patients who underwent surgical treatment showed the resolution of the functional and aesthetical problems; the patients who did not undergo surgical treatment, in relation to age and type of pathology, showed an arrest during clinical and radiographic checks. CONCLUSIONS: We have pointed out the importance of a careful differential diagnosis of fibrous dysplasia with other pathologies with clinical and radiographic conditions similar to it and the importance of a correct surgical planning, carried out according to the patient's age, location, mono or polyostotic form of fibrous dysplasia and to the presence or absence of functional limitations, and aesthetic problems. Further-more we have pointed out the great possibilities of reconstruction of the surgical defects deriving from the utilization of autologous bone grafts and the benefits deriving from the introduction of the internal rigid fixation for the stabilization of these grafts in the surgical defects.

Adolescent↗
PubMedDate not supplied

The pattern of breathing in diffuse lung fibrosis.

The volume and time components of the breathing cycle together with the mouth occlusion pressure P0.1) were measured in 12 patients with chronic diffuse lung fibrosis (DLF) breathing air and in nine normal subjects matched for age and sex. In addition, static lung elastance was measured in all patients. It was found that in DLF the frequency of breathing (f) and P0.1 were positively correlated with lung elastance, whereas tidal volume (VT) decreased significantly with increasing elastance. Minute ventilation and mean inspiratory flow were independent of lung elastance. The VT and f of DLF reported in this paper and those from other published reports were compared with the VT and f of elastically loaded normal subjects. At equivalent levels of elastance, both DLF and loaded normal subjects show qualitatively similar changes. This data suggests that in DLF patients the inspiratory neuromuscular drive is increased as a function of their elastic load, the increase being sufficient to maintain alveolar ventilation within normal limits.

Adult↗