Classification of endolaryngeal laser partial laryngectomies.
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Carcinoma↗
Biomedical subjects
G M Sprinzl
Publications and source records attributed to G M Sprinzl.
Analysis of recurrences after transoral laser resection of larynx carcinomas.
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Adenocarcinoma↗
[Whole organ plastination in otorhinolaryngology].
Total organ sections have proven to be useful in the evaluation of the clinical growth behavior of malignant tumors. However, histologic techniques using tissues embedded in celloidin or paraffin are difficult to produce and require extensive amounts of time. Total organ plastination is a method superior to the aforementioned techniques. The number of artefacts is also greatly reduced by avoiding the need for decalcification. After removal of fat and dehydration, specimens can be placed in epoxy resin. Following evacuation and hardening of specimens, parallel sections can be separated with a diamond wire saw for precision slicing, with section thicknesses ranging from several centimeters to as small as 40 microns. The loss in material caused by slicing is as little as 0.3 mm per section. A further benefit of this method is the relatively large amount of time saved. The entire procedure yielding complete plastinated specimens requires a time period of approximately 40 days. The plastinated specimens are transparent, odorless and fixed and are ideal for instructional and research purposes. Deplastination for the purpose of further diagnositic study is also achievable with a minimum of technical effort.
Epoxy Resins↗
[The temporal bone].
Imaging of the temporal bone by high resolution CT scan has become more and more accurate in recent years. Coronal slices are particularly important. We present the anatomy of four temporal bones embedded in plastic material. Coronal sections with a thickness of 2 mm were taken, radiographed and their density measured. Particular interest was given to the three-dimensional relations as well as to the density of bone of important morphological structures such as the labyrinth, middle ear, facial canal, sigmoid sinus, carotid canal and the mastoid. A low density of bone corresponds to the colour blue, a high density to black. Because of the high resolution of the method it was possible to image small and fine structures such as the auditory ossicles, and the perilymphatic and endolymphatic ducts. A three-dimensional reconstruction may well be possible in the future, and the possibilities of this method are discussed.
Carotid Artery, Internal↗