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A Schaetz

Publications and source records attributed to A Schaetz.

9 recordsLinked to original sources
PubMed1994

Tumour necrosis factor-alpha, interleukin-1 beta and interleukin-6 in patients with renal cell carcinoma.

Patients with renal cell carcinoma (RCC) can exhibit fever, weight loss and increases in acute phase proteins. Interleukin (IL)-1, tumour necrosis factor (TNF) and IL-6 are considered major mediators of local and systemic inflammation. We measured plasma IL-1 beta, TNF-alpha (immunoradiometric assay) and IL-6 (ELISA) in 78 consecutive patients with untreated RCC and in 56 normal subjects. IL-6 plasma levels were higher in patients with RCC (mean 24.2 pg/ml, 11.1-37.3, 95% confidence interval) than in normal subjects (11.6 pg/ml, 10.1-13.1, n = 39, P < 0.01). The patients with fever or weight loss had higher blood levels of IL-6. IL-6 blood levels were also higher in patients with lymph node invasion and/or distant metastases (94.7 pg/ml, 39.0-150.4, n = 15) than in patients with undisseminated RCC (7.4, 4.1-10.7, n = 63, P < 0.0001). An abnormal IL-6 plasma value (> 40 pg/ml) had a positive predictive value of 91.0% for lymph node and/or metastatic spread of RCC. IL-6 was statistically correlated with C-reactive protein (nephelometric assay) blood values r' = 0.67, n = 78, P < 0.001). The TNF-alpha and IL-1 beta levels were not significantly different in patients with or without fever or weight loss. The plasma levels of the three cytokines were not correlated with the size of the primary tumour. An increased plasma value of IL-6 is a good marker for tumour dissemination in patients with untreated RCC.

Adult↗
PubMed1992

Diagnosis and management of 17 consecutive patients with inflammatory abdominal aortic aneurysm.

This report reviews the authors' experience in diagnosing and managing 17 consecutive patients with inflammatory abdominal aortic aneurysm (AAA). Among 491 patients undergoing repair for AAA during a 10-year period, 17 (3%) had evidence of associated periaortic fibrosis, which was confirmed histologically. No patient had acute rupture, and two patients (12%) had chronic contained rupture. Ureteral obstruction was evident in seven patients. In 41% of the patients, available surgical correlation demonstrated that computed tomographic (CT) scan accurately delineated the extent of the disease. Sixteen patients underwent aneurysm resection. Ureteral obstruction was relieved by ureterolysis in three patients treated early in this series. In the last period of the study, well-documented hydronephrosis spontaneously subsided in two patients without special treatment. Of these 17 patients, 15 (88%) were early (30-day) survivors. There were two late deaths at 2 months and 5 years; 12 (71%) patients are still alive and free of symptoms up to 10 years after operation. On the basis of our study, we conclude the following: (1) precise preoperative diagnosis and detailed anatomic information are widely available with CT; (2) aneurysm resection is the treatment of choice because the risk of rupture still exists, and this procedure seems to reverse the inflammatory process; (3) good early and late results can be expected with proper surgical technique; and (4) routine follow-up with CT is recommended to document resolution or progression of the fibrotic process after aneurysm resection.

Aged↗
PubMed1992

[Aneurysms of the abdominal aorta with periaortic fibrosis. A retrospective study of 23 consecutive successful operations].

Aneurysms of the abdominal aorta associated with periaortic fibrosis (AFPA) are a different clinicopathological entity from atheromatous aneurysms and nonspecific inflammatory periaortitis. The physiopathology and diagnostic and therapeutic modalities for these AFPAs are controversial. Over a 12-year period, 23 aneurysms with periaortic fibrosis (4%) confirmed by a histological study were operated at Beaujon hospital. Four patients were operated at the rupture stage, 2 with acute rupture and 2 with contained chronic rupture. Uni- or bilateral ureteral obstruction was noted in 8 patients. The diagnosis was suspected preoperatively in 60% of cases. Surgery confirmed the accuracy of the anatomical information provided preoperatively by the CT examination performed in 9 patients. Debridement and grafting were performed in 22 patients. Three patients with associated ureteral obstruction were treated with ureterolysis during the same operative step at the beginning of our experience. Later on, 3 documented cases of hydronephrosis receded after the isolated debridement and grafting of the aneurysm. Hospital mortality was of 5% in 19 patients operated electively. Two patients died later, after 2 months and after 5 years, and 16 are still alive and without symptoms at present, after and average time lapse of 68 months.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗