PubMed · 7206039
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W P Work. 1980. Bilateral partial intranasal ethmoidectomies.. https://pubmed.ncbi.nlm.nih.gov/7206039/
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The present study was performed on axial and coronal CT scans of 100 patients, most of whom were affected by nasal polyposis. Five observers had to analyse the radiograms and answer a questionnaire including the following items: presence of a supraorbital recess; identification of anterior and posterior ethmoidal canals; dehiscences in the lamina papyracea; pneumatized middle turbinate; presence of a sphenomaxillary plate; presence of Haller's cells; presence of Onodi's cells; relationships of the optic canal; relationships of the internal carotid artery; relationships of the maxillary nerve; relationships of the vidian nerve; level difference between the ethmoid roof and nasal vault; depth of the sphenoethmoidal recess. The data obtained were compared with those drawn from anatomical studies. The fair agreement between them proves the value of CT as an alternative method for studying paranasal sinuses anatomy.
A case of iatrogenic perforation of the lamina cribrosa, followed by intracranial placement of a nasogastric tube in a preterm neonate is described. By routine ultrasound examination of the brain an echogenic structure was seen, which was radiographically diagnosed as a nasogastric tube. The tube was manually removed under antibiotic prophylaxis. No complications were observed. The false route disappeared and long-term follow-up showed no neurological side effects.