scholarly journals Analysis of lacrimal duct morphology from cone-beam CT dacryocystography in a Japanese population

2021 ◽  
Author(s):  
Jutaro Nakamura ◽  
Tomoyuki Kamao ◽  
Arisa Mitani ◽  
Nobuhisa Mizuki ◽  
Atsushi Shiraishi
Keyword(s):  
Ethnic Groups ◽  
Japanese Population ◽  
Cone Beam Ct ◽  
Northeast Asia ◽  
Nasolacrimal Duct ◽  
Lacrimal Duct ◽  
Anthropometric Data ◽  
Invasive Treatment ◽  
Curve Line ◽  
Duct Stenosis

Abstract Dacryocystorhinostomy (DCR) is the first-line treatment for lacrimal duct stenosis and obstruction in western countries. Endoscopic-assisted nasolacrimal duct intubation (ENDI) is spreading steadily as a minimally invasive treatment in Northeast Asia. ENDI is prevalent in this area because Northeast Asians have relatively flat facial features, with a less elevated superior orbital rim than other ethnic groups. This allows for relatively easy manipulation of a dacryoendoscope. Evidence has accumulated that the morphology and inclination of the lacrimal duct differ among individuals and ethnic groups. In this study, we collected anthropometric data from a Japanese population of 100 samples—the parameters vital for designing a dacryoendoscope probe. The data we provided was essential in designing the overall length, bending point, and curve-line of the dacryoendoscope probe. Although the Japanese data measured in this study would not be directly applicable to other ethnic groups, we hope that the parameters provided by this study will contribute to the accumulation of valuable anthropometric data for the design of endoscopic probe morphologies and the development of therapeutic devices for lacrimal tract diseases—in terms of designing optimal morphologies, specific to ethnic groups and populations.

Thyrotoxic periodic paralysis

2011 ◽  
pp. 452-454
Author(s):  
Annie W.C. Kung
Keyword(s):  
African American ◽  
American Indian ◽  
Ethnic Groups ◽  
Japanese Population ◽  
Chinese Population ◽  
Periodic Paralysis ◽  
Thyrotoxic Periodic Paralysis ◽  
Female Ratio ◽  
Asian Populations ◽  
Male To Female

The association of thyrotoxicosis and periodic paralysis was first described in 1902 in a white patient. However, it soon became evident that thyrotoxic periodic paralysis (TPP) affects mainly Asian populations, in particular Chinese and Japanese, although isolated cases have also been reported in other ethnic groups such as white, Hispanic, African-American, and American Indian populations. The incidence of TPP in non-Asian thyrotoxic patients is around 0.1%, whereas in Chinese and Japanese thyrotoxic patients, TPP affects 1.8% and 1.9%, respectively (1–3). Despite a higher incidence of thyrotoxicosis in women, TPP affects mainly men, with a male to female ratio ranging from 17:1 to 70:1, according to different series. In the Chinese population, TPP affects 13% of male and 0.17% of female thyrotoxic patients. In the Japanese population, TPP was reported to occur in 8.2% of male and 0.4% of female thyrotoxic patients in the 1970s, but in 1991 the reported incidence had decreased to 4.3% and 0.04%, respectively (4).

scholarly journals Outcome of Probing for Congenital Naso-Lacrimal Duct Obstruction

2015 ◽  
Vol 14 (1) ◽  
pp. 36-37
Author(s):  
Mozammel Hoq Sharife ◽  
M Jalal Uddin ◽  
Mostak Ahmed
Keyword(s):  
Nasolacrimal Duct ◽  
Age Group ◽  
Lacrimal Duct ◽  
Female Ratio ◽  
Congenital Nasolacrimal Duct Obstruction ◽  
Duct Obstruction ◽  
Male Female Ratio ◽  
Group A ◽  
Level Hospital

Objective: The study was conducted to evaluate outcome of probing for congenital nasolacrimal duct obstruction. It was an interventional study at a tertiary level hospital of Chittagong. Methods: The study was conducted during April 2009 to March 2013 (04 years). Total 120 eyes of 102 children of 1-3 years age group were probed. Minimum follow up time was 01 year. Results: 110 eyes fully cured, 05 eyes needed re-probing, 03 eyes needed Dacrocystorhinostomy operation (DCR) and 02 cases were dropped out. Male female ratio was 72 (60%) and 48 (40%). Conclusion: Outcome of probing is better among 1-2 years age group than that of 2- 3 years age group. A discussion is made with updated literature review. DOI: http://dx.doi.org/10.3329/cmoshmcj.v14i1.22879 Chatt Maa Shi Hosp Med Coll J; Vol.14 (1); Jan 2015; Page 36-37

scholarly journals Nasolacrimal Duct Stenosis after Oral Capecitabine Administration

2019 ◽  
Vol 33 (1) ◽  
pp. 95 ◽  
Author(s):  
Yeonji Jang ◽  
Namju Kim ◽  
Keun-Wook Lee ◽  
Ho-Kyung Choung ◽  
Sang In Khwarg
Keyword(s):  
Nasolacrimal Duct ◽  
Oral Capecitabine ◽  
Nasolacrimal Duct Stenosis ◽  
Duct Stenosis

scholarly journals Saisoin Efficacy in Refractory Nasolacrimal Duct Stenosis

2016 ◽  
Vol 67 (2) ◽  
pp. 109-113
Author(s):  
Shigechika KOHASHI ◽  
Hideya ISAI ◽  
Tomotaka TOMIYAMA ◽  
Toshihiko NAKASHIMA ◽  
Makoto TAKEDA
Keyword(s):  
Nasolacrimal Duct ◽  
Nasolacrimal Duct Stenosis ◽  
Duct Stenosis

Self-Retaining Bicanaliculus Stents as an Adjunct to 3-Snip Punctoplasty in Management of Upper Lacrimal Duct Stenosis

2013 ◽  
Vol 29 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Nikolaos T. Chalvatzis ◽  
Argyrios K. Tzamalis ◽  
Ioannis Mavrikakis ◽  
Ioannis Tsinopoulos ◽  
Stavros Dimitrakos
Keyword(s):  
Lacrimal Duct ◽  
Lacrimal Duct Stenosis ◽  
Duct Stenosis

Attachment-oriented Endoscopic Surgical Strategy for Sinonasal Inverted Papilloma

2008 ◽  
Vol 22 (6) ◽  
pp. 629-634 ◽  
Author(s):  
Roee Landsberg ◽  
Oren Cavel ◽  
Yoram Segev ◽  
Avi Khafif ◽  
Dan M. Fliss
Keyword(s):  
Frozen Section ◽  
Attachment Site ◽  
Nasolacrimal Duct ◽  
Surgical Strategy ◽  
Nasolacrimal Duct Stenosis ◽  
The Mean ◽  
The One ◽  
A Prospective Study ◽  
Duct Stenosis

Background It is well documented that inverted papillomas (IP) have a localized attachment site. Still, instead of concentrating on the attachment site, endoscopic surgeons often perform an extended resection similar to the one achieved after external surgery. Objective Our objective was to evaluate an attachment-oriented endoscopic surgical strategy and to determine IP attachment diameter and location. Methods A prospective study was conducted. Thirty-three consecutive patients who underwent endoscopic IP excision (2001-2007) were enrolled. Thirty patients had adequate follow-up. Attachment diameters were measured in 25/33 patients. Surgery included debulking, identifying the precise mucosal attachment site, subperiosteal dissection and excision of the attachment, frozen section control, and resection/drilling of underlying bone. Results The mean measured attachment diameter (n = 25) was 8.4 ± 6 mm (range, 3-23 mm). Attachment locations included maxillary sinus (39%), ethmoid sinus (21%), nasal cavity (21%), frontal sinus (6%), sphenoid sinus (6%), lamina papyracea (3%), and cribriform plate (3%). The mean follow-up (n = 30) was 40 ± 21 months. Three patients had Krouse stage 1, 10 patients had stage 2, and 17 patients had stage 3. Nine patients had undergone previous surgeries. After attachment-oriented endoscopic surgery, three patients had persistent disease. Nasolacrimal duct stenosis was the only complication (n = 1). Conclusion Even advanced IP have small attachments. Their Identification facilitates efficacious resection with minimal morbidity.

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