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R Prommegger

Publications and source records attributed to R Prommegger.

20 records · Page 2Linked to original sources

Tailored antireflux surgery for gastroesophageal reflux disease: effectiveness and risk of postoperative dysphagia.

The Nissen fundoplication is not the proper antireflux procedure for patients with poor esophageal peristalsis as it does not strengthen impaired esophageal peristalsis. The aim of this study was to investigate if tailoring of antireflux surgery according to esophageal contractility is an effective treatment of gastroesophageal reflux disease (GERD) with a low incidence of postoperative dysphagia. The Toupet fundoplication was laparoscopically performed on 32 patients with poor esophageal peristalsis and the Nissen fundoplication on 17 patients with normal peristalsis. After a median follow-up of 15 months, only 1 of the 49 patients (2.04%) complained of heartburn. Acute esophagitis was found in none of them on endoscopy. Of 40 patients tested postoperatively, 2 (5%) underwent pathologic esophageal pH monitoring. Postoperative dysphagia was found in two patients (4.1%) compared with 25 (51%) preoperatively (p < 0.05). There was a significant reduction of dysphagia following the Toupet fundoplication. Both procedures increased the resting pressure of the lower esophageal sphincter (LES) significantly, which was more pronounced following the Nissen fundoplication. Relaxation of the LES was significantly better following the Toupet than after the Nissen fundoplication. There was significant improvement of esophageal peristalsis following the Toupet fundoplication. Tailored antireflux surgery is an effective strategy for treatment of GERD. The incidence of postoperative dysphagia is low owing to improvement of impaired esophageal peristalsis following the Toupet fundoplication. It may be due to the fact that the Toupet fundoplication causes less esophageal outflow resistance than the Nissen fundoplication.

Adult↗

Secretoneurin in carcinoids of the appendix-immunohistochemical comparison with chromogranins A,B and secretogranin II.

BACKGROUND: The aim of the present study was to investigate immunohistochemically the distribution of secretoneurin, a novel 33 amino acid peptide, in comparison to chromogranin A, chromogranin B, and secretogranin II in carcinoids of the appendix. MATERIALS AND METHODS: Paraffin-embedded tissues from 47 carcinoids were incubated with antibodies specific for chromogranin A, chromogranin B, the secretogranin II derived peptide LF- 19, and secretoneurin. RESULTS: 44 tumors (94%) were positive for secretoneurin, whereas only 39 tumors (83%) were immunoreactive for chromogranin A. There was no significant correlation between neuropeptide expression and type of carcinoid, tumor size, vascular infiltration, serosal involvement or mesoappendiceal infiltration. CONCLUSIONS: Our investigations revealed that secretoneurin is detected more frequently than chromogranin A in carcinoids of the appendix. This supports the theory that tumor cells of appendiceal carcinoids are of a different origin than other midgut carcinoids. No special tumor entity with a characteristic secretoneurin-chromogranin pattern could be identified.

Antigens, CD↗