11/125. nasolacrimal duct obstruction caused by an oncocytoma.We report the case of a woman with epiphora and purulent rhinorrhea for which she initially underwent a dacryocystorhinostomy. The unilateral rhinorrhea was persistent and one year later an oncocytoma of the lacrimal sac with extension to the nasolacrimal duct was diagnosed. Surgical excision of the tumour via a medial maxillectomy was accomplished. Long-term follow-up for 10 years was without evidence of recurrence. To our knowledge only 22 oncocytomas of the lacrimal sac but none involving the duct have so far been reported. In patients with acquired nasolacrimal duct obstruction a lacrimal sac or nasolacrimal duct tumour though rare is a possibility and should be kept in mind. The majority of these tumours are malignant and oncocytomas may undergo malignant transformation.- - - - - - - - - - ranking = 1keywords = duct obstruction, obstruction, duct (Clic here for more details about this article) |
12/125. Squamous metaplasia of the canaliculi associated with 5-fluorouracil: a clinicopathologic case report.OBJECTIVE: To illustrate a newly recognized histopathologic change in a patient with canalicular obstruction after weekly administration of 5-fluorouracil for colon cancer. DESIGN: Interventional case report. methods: A full-thickness section of canaliculus was obtained during surgical repair. MAIN OUTCOME MEASURE: Histopathologic changes in the specimen. RESULTS: The prominent histologic feature of the canalicular specimen was severe squamous metaplasia with narrowing of the lumen. CONCLUSION: Canalicular obstruction may follow systemic use of 5-fluorouracil due to squamous metaplasia.- - - - - - - - - - ranking = 0.0010365100102333keywords = obstruction (Clic here for more details about this article) |
13/125. Ipswich lacrimal tube: pedicle nasal septal tube for the reconstruction of lacrimal drainage passage.Canalicular blockage of the lacrimal system still remains a major challenge for oculoplastic surgeons. The conventional treatment of conjunctival dacryocystorhinostomy using the Lester Jones bypass tube is often associated with tube migration and foreign body reaction. The authors report a new technique to reconstruct the lacrimal passage on a single patient with severe canalicular obstruction following repeated failures from previous Lester Jones tube operations. An epithelial-lined tube was recreated between the nasal cavity and the conjunctiva using a superiorly based mucoperichondrial flap from the nasal septum (Ipswich lacrimal tube). The pedicle of the flap was divided six weeks following the operation. The patient was still symptom free two years following the operation together with a positive dye test confirming the patency of the new lacrimal tube.- - - - - - - - - - ranking = 0.00051825500511665keywords = obstruction (Clic here for more details about this article) |
14/125. Epiphora following rhinoplasty and Caldwell-Luc procedures.Cosmetic rhinoplasty and maxillary sinus surgery are rare causes of lacrimal obstruction. The lacrimal sac is quite vulnerable to damage by the lateral osteotomy of the rhinoplasty. While obstruction from such damage usually resolves in three months, these three cases illustrate the risk of perisitent obstruction, particularly in complicated cases. The nasoantral window in the Caldwell-Luc may damage the distal lacrimal opening if it is placed too high, or made too large. Occasionally, the duct will extend more anterior and inferior and be quite vulnerable to damage by the nasal antrostomy.- - - - - - - - - - ranking = 0.0017916462507714keywords = obstruction, duct (Clic here for more details about this article) |
15/125. Migration and apparent disappearance of silicone tube following treatment of nasolacrimal duct obstruction.PURPOSE: To describe the unusual complication of migration and apparent disappearance of silicone tubes following intubation of the lacrimal drainage system. DESIGN: Interventional case reports. METHOD: Report of two patients with an unusual tube migration process. RESULTS: Silicone stents migrated nasally, with healing of the erosion tract in the wake of the migrating tube. One tube became completely internalized. CONCLUSIONS: Meticulous inspection of the medial canthal area in patients with suspected spontaneous extrusion of silicone stents from the lacrimal drainage system is warranted. Examination under anesthesia and nasal endoscopy may help locate tubes in cases of suspected nasal migration.- - - - - - - - - - ranking = 0.79943148503499keywords = duct obstruction, obstruction, duct (Clic here for more details about this article) |
16/125. Congenital nasolacrimal duct occlusion with clinical anophthalmos: a possible new association.PURPOSE: To report the association of congenital nasolacrimal duct occlusion and clinical anophthalmos in an eight-year-old girl. methods: A case report. The patient suffered from epiphora and clinical anophthalmos on the right side since birth. This paper presents the clinical presentation, workup, and surgical approach of the case. RESULTS: The nasolacrimal system of the patient was occluded on irrigation. Computed tomography showed a blockage at the level of the sac-duct junction, an enlarged nasolacrimal duct below the obstruction, and a sclera-like ball of tissue surrounded by extraocular muscles in the right orbit. Treatment included a right bicanalicular silicon intubation performed under general anesthesia. CONCLUSION: This case may represent a new association that has not been previously reported.- - - - - - - - - - ranking = 0.002176423653067keywords = obstruction, duct (Clic here for more details about this article) |
17/125. Docetaxel-induced histologic changes in the lacrimal sac and the nasal mucosa.PURPOSE: To identify histopathologic changes in the lacrimal sac and the nasal mucosa caused by docetaxel in 3 patients with canalicular narrowing and nasolacrimal duct obstruction. methods: Small case series. Lacrimal sac and nasal mucosal specimens were obtained at the time of dacryocystorhinostomy or during silicone intubation to correct epiphora in 3 patients receiving docetaxel. Histologic evaluation was performed. RESULTS: Extensive fibrotic changes in the stroma of the lacrimal sac and the nasal mucosa were the prominent histologic features in all 3 patients. A biopsy specimen was taken from the lower portion of the nasal mucosa (near the inferior turbinate) in one patient at the time of silicone intubation and showed both clinical and histologic evidence of keratinization with marked epidermalization of the surface epithelium, thickening, and parakeratosis of the squamous epithelium. CONCLUSIONS: nasolacrimal duct obstruction secondary to treatment with docetaxel may be in part due to stromal fibrosis in the mucosal lining of the lacrimal drainage apparatus.- - - - - - - - - - ranking = 0.39971574251749keywords = duct obstruction, obstruction, duct (Clic here for more details about this article) |
18/125. Perforated punctal plug in the treatment of partial punctal stenosis.BACKGROUND: Epiphora is a common finding among elderly patients. Common etiologies of epiphora include lid-globe appositional abnormalities, ocular surface disorders, and lacrimal excretory obstruction. CASE REPORT: A patient reported with symptoms of unilateral, nonpainful epiphora. The cause was determined to be punctal stenosis and the patient was managed with a perforated punctal plug. CONCLUSION: Punctal stenosis is one of several disorders that may cause a lacrimal excretory obstruction. Common methods of treatment include repeated dilation and irrigation, as well as various surgical procedures described in the literature. eye care practitioners should be aware of the availability of perforated punctal plugs and their usefulness in treatment of the partially stenosed punctum.- - - - - - - - - - ranking = 0.0010365100102333keywords = obstruction (Clic here for more details about this article) |
19/125. Postcataract surgery endophthalmitis in a patient with a functioning Jones tube.dacryocystorhinostomy with Jones tube placement has proven to be an effective method for correcting upper-system lacrimal drainage obstruction. The present case report illustrates the potential risk of bacterial contamination of the operative field during subsequent cataract surgery by retrograde passage of airway secretions. Temporary occlusion of the Jones tube by a silicone plug can eliminate this potential source of endophthalmitis. In addition, temporary occlusion of the Jones tube in the office can be used to determine the effectiveness of lacrimal drainage through a reconstructed canalicular system.- - - - - - - - - - ranking = 0.00051825500511665keywords = obstruction (Clic here for more details about this article) |
20/125. nasolacrimal duct obstruction associated with radioactive iodine therapy for thyroid carcinoma.A 50-year-old woman presented with a 5-year history of unilateral epiphora that began shortly after 131I therapy for thyroid carcinoma. A recent recombinant human thyroid-stimulating hormone (Thyrogen) scan had shown a focus of uptake adjacent to the right eye that was initially thought to be a possible metastasis. Probing and irrigation revealed complete blockage of the right nasolacrimal duct. The patient underwent a right dacryocystorhinostomy (DCR) and biopsy of the lacrimal sac. Histopathologic examination of the lacrimal sac and nasal mucosa revealed foreign-body reaction and fibrosis with no malignant cells. A repeat Thyrogen scan after DCR showed no residual focus of activity in the nose or near the lacrimal sac and confirmed reestablishment of lacrimal drainage on the right side. This case demonstrates that 131I therapy for thyroid carcinoma can be associated with nasolacrimal duct obstruction. The appearance of a focus of uptake near the lacrimal sac on Thyrogen scanning in a patient with a history of thyroid carcinoma may not be due to a new focus of metastasis and may indeed be due to pooling of 131I in the lacrimal sac due to nasolacrimal duct blockage.- - - - - - - - - - ranking = 0.99976311876458keywords = duct obstruction, obstruction, duct (Clic here for more details about this article) |
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