Publications by authors named "H Reh"
Background: Contact allergy to dental materials is poorly understood; clinical manifestations are heterogeneous.
Objective: To analyse positive patch test reactions to metals (as their alloys or salts) used in dentistry together with clinical symptoms and possible relevance to dental fillings.
Methods: We retrospectively analysed 206 patients who underwent patch testing with metals used in dentistry because of suspected contact allergy to them.
Background: The aim of this study was to investigate the use of orally administered 5-aminolevulinic acid (ALA) for in vivo photodynamic diagnosis and follow-up of premalignant and malignant esophageal lesions.
Methods: Twenty-two patients with known or treated malignant and precancerous esophageal lesions were sensitized with orally administered ALA (15 mg/kg). Six patients had Barrett's esophagus, with or without severe dysplasia, 5 squamous cell cancer or early-stage (uT1N0M0) adenocarcinoma, 1 advanced-stage (uT3N1) adenocarcinoma, and 1 patient a lesion with an appearance that suggested esophageal cancer.
Background: Dysplasia and early cancer of the upper gastrointestinal (GI) tract often are undetected at white-light endoscopy. We describe oral administration of 5-aminolevulinic acid for the in vivo photodynamic diagnosis of premalignant and malignant lesions during endoscopy.
Methods: Four patients with known gastric adenoma (n = 1), macroscopically undetected but histologically proven esophageal squamous cell cancer (n = 1), suspected early cancer of the esophagus (n = 1), and multiple duodenal adenomas (n = 1) were sensitized with 5-aminolevulinic acid administered orally (15 mg/kg body weight).