Results 261 to 270 of about 155,998 (284)
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Scanning Electron Microscopic Features of the Canalicular Entrance Into the Lacrimal Sac.

Ophthalmic Plastic and Reconstructive Surgery, 2019
PURPOSE The aim of this study was to examine the ultrastructural features of the canalicular entrance into the lacrimal sac. METHODS Ten openings of the common canaliculus into the lacrimal sac from 10 lacrimal sacs obtained during a dacryocystectomy ...
M. Ali
semanticscholar   +1 more source

Immunohistochemical Analysis of the Lacrimal Sac Mucopeptide Concretions.

Ophthalmic Plastic and Reconstructive Surgery, 2019
PURPOSE To investigate the presence and distribution patterns of proteins in the lacrimal sac mucopeptide concretions. METHODS The study was performed on 10 mucopeptide concretions obtained from the lacrimal sac during an endoscopic ...
M. Ali, J. Heichel, F. Paulsen
semanticscholar   +1 more source

Dacryocystectomy for Tumors of the Lacrimal Sac

Ophthalmic Surgery, Lasers and Imaging Retina, 1977
SUMMARY A high index of suspicion is very important in the early diagnosis and treatment of potentially lethal tumors of the lacrimal sac. The triad of a mass above the medial canthal tendon, chronic dacryocystitis which irrigates freely and bloody reflux on irrigation should alert the ophthalmologist of this potentially fatal situation ...
J. C. Flanagan, D. Y. Stokes
openaire   +4 more sources

Nonepithelial Tumors of the Lacrimal Sac.

Ophthalmic Plastic & Reconstructive Surgery, 1994
Lacrimal sac tumors are rare and mostly of epithelial origin. We conducted a clinicopathologic study of 35 cases of nonepithelial tumors of the lacrimal sac. These tumors included 13 fibrous histiocytomas, one hemangiopericytoma, one lipoma, ten lymphoid lesions, eight malignant melanomas, one granulocytic sarcoma, and one neurofibroma.
Mary A. Stefanyszyn   +2 more
openaire   +4 more sources

Malignant Melanoma of the Lacrimal Sac

Otolaryngology–Head and Neck Surgery, 1995
Although malignancies of the lacrimal sac are rare, malignant melanoma of the lacrimal sac is an exceedingly rare occurrence. Patients with abnormalities of the nasolacrimal system may come to otolaryngologists for evaluation. Treatment of lacrimal sac malignancies will necessitate consultation of a head and neck surgeon. The triad of symptoms commonly
David Kostik   +4 more
openaire   +2 more sources

Nasal and Lacrimal Sac Histopathology in Patients With Systemic Sarcoidosis Undergoing External Lacrimal Drainage Surgery.

Ophthalmic Plastic and Reconstructive Surgery, 2019
PURPOSE To review the histological findings in the lacrimal sac and nasal mucosa from patients with sarcoidosis undergoing external lacrimal drainage surgery.
Christopher M. Stewart   +2 more
semanticscholar   +1 more source

A Rare Case of Pediatric Lacrimal Sac: Squamous Cell Carcinoma.

Journal of pediatric ophthalmology and strabismus, 2019
A case of a 6-year-old boy presenting with epiphora, medial canthal swelling, and lymphadenopathy is reported. Biopsy revealed a poorly differentiated squamous cell carcinoma.
R. Meel   +5 more
semanticscholar   +1 more source

Lacrimal Sac Diverticulum

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].
openaire   +2 more sources

EPITHELIOMA OF THE LACRIMAL SAC

JAMA: The Journal of the American Medical Association, 1925
True neoplasms of the lacrimal sac are somewhat unusual. Many reported tumors are granulomatous or degenerative products of long standing inflammation, while others arise intrinsically from various elements in the sac wall. The following cases of true epithelioma are noted in recent literature: Guibert 1 (in 1905), mentioned a limited epithelioma in ...
openaire   +2 more sources

Lacrimal Sac Diverticuli

Archives of Ophthalmology, 1989
John D. Bullock, Stuart H. Goldberg
openaire   +3 more sources

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