Results 241 to 250 of about 162,132 (265)
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Ophthalmic Plastic and Reconstructive Surgery, 2020
Purpose: Current hypothesis regarding the mechanism of active tear drainage is based on studies performed ex vivo or under nonphysiological conditions. Novel ultra-high-frequency ultrasound has the advantage of generating images with superior resolution,
E. Bohman +9 more
semanticscholar +1 more source
Purpose: Current hypothesis regarding the mechanism of active tear drainage is based on studies performed ex vivo or under nonphysiological conditions. Novel ultra-high-frequency ultrasound has the advantage of generating images with superior resolution,
E. Bohman +9 more
semanticscholar +1 more source
Journal of Pediatric Ophthalmology & Strabismus, 1980
A case of fibroma arising from the anterolateral wall of a healthy lacrimal sac on the left side in a 22-year-old male is reported. There was no epiphora. The tumor presented as a painless, nonreducible swelling in the lacrimal sac region. It was excised off leaving a patent sac.
D K, Sen, H, Mohan
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A case of fibroma arising from the anterolateral wall of a healthy lacrimal sac on the left side in a 22-year-old male is reported. There was no epiphora. The tumor presented as a painless, nonreducible swelling in the lacrimal sac region. It was excised off leaving a patent sac.
D K, Sen, H, Mohan
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Hemangiopericytoma of the Lacrimal Sac
Archives of Ophthalmology, 1998Hemangiopericytoma (HPCT) rarely originates in the lacrimal sac; 7 cases have been reported previously and only 1 contained an ultrastructural study. In this article we report an additional case and review the previous reports. While the initial biopsy specimen showed nonspecific cytologic abnormalities, light and electron microscopic studies on the ...
N C, Charles, R N, Palu, J S, Jagirdar
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Canadian journal of ophthalmology. Journal canadien d'ophtalmologie, 1981
A benign encapsulated fibroma within the right lacrimal sac was found to be the cause of nasolacrimal obstruction in a 75-year-old man. This rare tumour was completely excised through an incision for a routine dacryocystorhinostomy, which could then be done.
M J, Howcroft, J J, Hurwitz
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A benign encapsulated fibroma within the right lacrimal sac was found to be the cause of nasolacrimal obstruction in a 75-year-old man. This rare tumour was completely excised through an incision for a routine dacryocystorhinostomy, which could then be done.
M J, Howcroft, J J, Hurwitz
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Lacrimal Sac Hemangiopericytoma
American Journal of Ophthalmology, 1971N, Gurney, T, Chalkley, R, O'Grady
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Canadian journal of ophthalmology. Journal canadien d'ophtalmologie, 1979
Analysis of dacryoliths removed at operation showed that most consisted of calcium. One consisted of ammonium and could be directly related to the presence of bacteria. Tear samples obtained from 14 patients with dacryoliths were compared with seven normal patients with regard to calcium, phosphorus, and uric acid concentrations, tear to serum calcium ...
S, Herzig, J J, Hurwitz
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Analysis of dacryoliths removed at operation showed that most consisted of calcium. One consisted of ammonium and could be directly related to the presence of bacteria. Tear samples obtained from 14 patients with dacryoliths were compared with seven normal patients with regard to calcium, phosphorus, and uric acid concentrations, tear to serum calcium ...
S, Herzig, J J, Hurwitz
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2017
Lacrimal diverticula are cystic outpouchings, mostly communicating with the lacrimal sac [1–5]. An abnormal cellular cord stem from the lacrimal sac region during embryogenesis could contribute to diverticula. Diverticula of the lacrimal sac can be congenital, inflammatory, or post-traumatic [1].
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Lacrimal diverticula are cystic outpouchings, mostly communicating with the lacrimal sac [1–5]. An abnormal cellular cord stem from the lacrimal sac region during embryogenesis could contribute to diverticula. Diverticula of the lacrimal sac can be congenital, inflammatory, or post-traumatic [1].
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Revue de stomatologie et de chirurgie maxillo-faciale, 2005
Mean stage (NOSPECS classification) at time of surgery was 4.5 (range 2-6). Mean stage postoperatively was 2.4 (range 0-5). Comparison of the mean stages showed significant improvement of ocular protrusion: 1.55 (range 1-2) postoperatively versus 2.4 preoperatively.
A, Gleizal +3 more
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Mean stage (NOSPECS classification) at time of surgery was 4.5 (range 2-6). Mean stage postoperatively was 2.4 (range 0-5). Comparison of the mean stages showed significant improvement of ocular protrusion: 1.55 (range 1-2) postoperatively versus 2.4 preoperatively.
A, Gleizal +3 more
openaire +1 more source