PubMed · 10180592
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A M Alyassin, W E Lorensen. 1998. Virtual endoscopy software application on a PC.. https://pubmed.ncbi.nlm.nih.gov/10180592/
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The purpose of this report was to describe a safe, simple, and rapid approach to percutaneous antegrade endopyelotomy. In contrast to standard percutaneous endopyelotomy techniques, in this procedure, the endopyelotomy stent is placed at the outset. The endopyelotomy incision is then made with an acorn-tipped Bugbee electrode directly down onto the stent, in a manner analogous to a ureteral meatotomy in the bladder. The advantage of this approach is twofold. Primary placement of the stent helps to define the appropriate site and direction for the endopyelotomy incision, allowing marsupialization of the proximal ureter into the renal pelvis. Use of this technique also obviates the need to pass a large-caliber stent after the endopyelotomy incision has been made, thereby avoiding a potential risk of ureteropelvic junction disruption. Clinical and radiographic follow-up was available in 29 (76%) of 38 patients who underwent this procedure. Success, defined as a resolution of symptoms and decrease in calicectasis, was achieved in 24 (83%) of the 29 patients. We have found primary placement of an endopyelotomy stent and use of electrocautery as a cutting mode safely facilitates a precise endopyelotomy incision.
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The nasosinusal diseases are dominated by the rhinosinusitis. Within this framework, the data drawn from the clinical history and the endoscopy are essential. The imaging is here of secondary importance. It is especially useful to assess the extension of the affection and the surgical difficulties which can be encountered in the treatment of the inflammatory or infectious chronic diseases. On the other hand in the event of tumour it can be helpful to determine the etiologic diagnosis and the extension of the disease. The importance of some subjective symptoms as the nasal obstruction will be specified by investigative tests such as the rhinomanometry and the acoustic rhinometry. The etiology of the inflammatory and infectious chronic diseases will be partly established by the study of nasal cytology, the mucociliary testing and the ultra structural study of the cilia.