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Jong-Yil Chai,Tai-Soon Yong,Keeseon S. Eom,Duk-Young Min,Eun-Hee Shin,Virasack Banouvong,Bounnaloth Insisiengmay,Sithat Insisiengmay,Bounlay Phommasack,Han-Jong Rim 대한기생충학열대의학회 2010 The Korean Journal of Parasitology Vol.48 No.4
Phongsaly Province, located in the northernmost area of Lao PDR, was previously suggested to be endemic for the liver fluke Opisthorchis viverrini infection. To confirm, or rule out, this suggestion, the Phonxay village in the Khoua District, Phongsaly Province, was selected for a survey. Ten volunteers (8 men and 2 women aged 31-57 years) who consumed raw freshwater fish and had gastrointestinal troubles were treated with a single dose of praziquantel (40 mg/kg) and pyrantel pamoate (10 mg/kg) and purged with magnesium sulfate to recover any worm parasites. Eight of the 10 volunteers expelled 1 or more species of trematodes, nematodes, or cestodes (worm positive rate; 80%). The worms were morphologically identified as H. taichui (861 worms from 8 people), H. yokogawai (59 from 6 people), Phaneropsolus bonnei (1 from 1 person), Trichostrongylus sp. (2 from 2 people), Ascaris lumbricoides (2 from 1 person), Enterobius vermicularis (11 from 3 people), and Taenia saginata (1 strobila with scolex from 1 person). The results indicate that the mountainous area of Phongsaly Province, Lao PDR, is not endemic for the liver fluke but endemic for intestinal flukes, in particular, Haplorchis taichui and H. yokogawai.
Fishborne Trematode Metacercariae in Luang Prabang, Khammouane, and Saravane Province, Lao PDR
Han-Jong Rim,Woon-Mok Sohn,Tai-Soon Yong,Keeseon S. Eom,Jong-Yil Chai,Duk-Young Min,Soon-Hyung Lee,Eui-Hyug Hoang,Bounlay Phommasack,Sithat Insisiengmay 대한기생충학열대의학회 2013 The Korean Journal of Parasitology Vol.51 No.1
Ultrasonographic investigation of cholangiocarcinoma in Lao PDR
Kim, Ju Yeong,Yong, Tai-Soon,Rim, Han-Jong,Chai, Jong-Yil,Min, Duk-Young,Eom, Keeseon S.,Sohn, Woon-Mok,Lim, Jae Hoon,Choi, Dongil,Insisiengmay, Sithat,Phommasack, Bounlay,Insisiengmay, Bounnaloth Elsevier 2018 Acta Tropica Vol.182 No.-
<P><B>Abstract</B></P> <P> <I>Opisthorchis viverrini</I> is a group 1 carcinogen that causes cholangiocarcinoma (CCA). Although opisthorchiasis is known to be severely endemic to several areas along the Mekong River in Lao PDR, the CCA status of residents of this region is still under investigation. In this study, we analyzed the results of abdominal ultrasonography (US) performed on 6113 residents in 9 provinces (Vientiane Municipality, Savannakhet, Phongsaly, Khammouane, Saravane, Champasak, Vientiane, Xieng Khuouang, and Luang Prabang provinces) of Lao PDR from 2007 to 2011. Overall, 51 cases (0.83%) were detected with suspected CCA. The CCA rates in Vientiane Municipality and in Savannakhet and Khammouane provinces were 1.45%, 1.58%, and 1.09%, respectively. However, in the other 6 provinces, the rate of CCA averaged only 0.26%. In the 3 provinces with higher rates of CCA, bile duct dilatation (grade ≥ 2) was also significantly more prevalent (<I>P</I> <I><</I> 0.0001). These results are concordant with previous reports showing a higher endemicity of opisthorchiasis in Vientiane Municipality and in Savannakhet and Khammouane provinces.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The cholangiocarcinoma (CCA) prevalence in Lao PDR was clarified. </LI> <LI> Nine provinces were surveyed, showing a CCA prevalence of 0.83%. </LI> <LI> Three provinces showed the highest prevalence for both CCA and bile duct dilatation. </LI> <LI> Opisthorchiasis is more prevalent to these three provinces. </LI> <LI> Portable abdominal ultrasonography is useful for surveying CCA in the field. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>