196,127 research outputs found
A wear model for condition-based maintenence of cylinder liners in a naval diesel engine
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Trace metal concentrations and susceptibility to oxidative stress in the polychaete Sabella spallanzanii (Gmelin) (Sabellidae): potential role of antioxidants in revealing stressful environmental conditions in the Mediterranean.
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Negation as Failure. Completeness of the Query Evaluation Process for Horn Clause Programs with Recursive Definitions
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Surgical management and prognostic factors of hilar cholongiocarcinoma: experience with 68 patients at the Ghent university Hospital
No full textFrom may 1992 to december 2006, 68 patients with Klatskin tumor were evaluated in our institution. Clinicopathological data were analyzed and univariate and multivariate analyses carriede out to determine significant prognostic factors affecting morbidity and mortality. Mean age was of 53,4+/-12 years. M/F ratio was of 46/22. After a median FU of 28 months (1-84), 11/68 (16%) of patients were non respectable (group A) and treated with palliative transtumoral stenting. The others 57 patients (group B) underwent surgery : n=5 for BYsmuth type II; n=20 for type IIIa; n=23 for type IIIb and n=9 for type IV. Median survival was of 6 months in non resected patients vs. 32 months in group B (p = 0,001). R0 resection was achived in 41/57 (72%) patients. Median survival was of 48 m in R0 vs. 10 m in R1-2 resection (p = 0,003). In-hospital mortality was of 3.5%. Overall morbidity rate was of 3.5%. Factors related to a shorter survival were identified as: Lymphatic and perineural invasiveness, R1-2 resection, AJCC stage, overall 3 & 5 y patient survival was of 45% and 22% respectively. Surgical approach for Klatskin tumor is the only chance for long-term survival with acceptable surgical mortality rate. In our experience, radical oncological surgery was possible in more than 70% of cases leading to a significant survival. Perineural and lymphatic involvement combined to a R1-R2 resection correlated with shorter survival
Re: hemangiopericytoma of the greater omentum: a potential imaging pitfall and cause of repeatedly unsuccessful angiographic embolization
No full textWe commend Kulkarni et al. (1) on their description of a rare case of aberrant splenic artery aneurysm treated with a combination of stent graft and coil embolization. Indeed, aneurysm of splenic artery is a protean disease as for the origin, location, size and clinical manifestations. Furthermore, what appears to be initially a splenic aneurysm can exceptionally turn out to be another vascular lesion as happened to us.
In fact, a 74-year-old man with a history of prostate cancer was recently diagnosed as having an aneurysm of 1.7 × 2 cm arising from a short gastric artery on a surveillance CT scan (Fig. 1). Superselective arteriography confirmed the aneurysmatic nature of the lesion (Fig. 2): transcatheter angiographic embolization was attempted twice but failed. At this point, the patient was referred for surgical repair: at laparoscopy, a brown, well-encapsulated, hypervascular lesion was observed in the greater omentum on the left side of the stomach and excised after ligation of its feeding pedicle. Histological and immunochemical features revealed benign hemangiopericytoma of the greater omentum (no mitosis or necrosis along with an immunoprofile positive for CD34 and bcl-2). At 14-month follow-up, the patient appears free from recurrent disease
Re: hemangiopericytoma of the greater omentum: a potential imaging pitfall and cause of repeatedly unsuccessful angiographic embolization.
No full textWe commend Kulkarni et al. (1) on their description of a rare case of aberrant splenic artery aneurysm treated with a combination of stent graft and coil embolization. Indeed, aneurysm of splenic artery is a protean disease as for the origin, location, size and clinical manifestations. Furthermore, what appears to be initially a splenic aneurysm can exceptionally turn out to be another vascular lesion as happened to us.
In fact, a 74-year-old man with a history of prostate cancer was recently diagnosed as having an aneurysm of 1.7 × 2 cm arising from a short gastric artery on a surveillance CT scan (Fig. 1). Superselective arteriography confirmed the aneurysmatic nature of the lesion (Fig. 2): transcatheter angiographic embolization was attempted twice but failed. At this point, the patient was referred for surgical repair: at laparoscopy, a brown, well-encapsulated, hypervascular lesion was observed in the greater omentum on the left side of the stomach and excised after ligation of its feeding pedicle. Histological and immunochemical features revealed benign hemangiopericytoma of the greater omentum (no mitosis or necrosis along with an immunoprofile positive for CD34 and bcl-2). At 14-month follow-up, the patient appears free from recurrent disease
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