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Extraforaminal Extrusion of Intervertebral Disc Misdiagnosed as Neurogenic Tumor: a Case Report
천세웅,박영섭,허원,백경희,문진일 대한자기공명의과학회 2017 Investigative Magnetic Resonance Imaging Vol.21 No.2
A 55-year-old male presented with dysesthesia of the right anteromedial thigh. A magnetic resonance image revealed a globular mass at the right extraforaminal area of the L3/4 level. Based on the diagnosis of neurogenic tumor, surgical excision was performed. The surgical impression and pathology confirmed extrusion of intervertebral disc. In a retrospective review of the magnetic resonance image, we noticed a fibrillary pattern directed from the intervertebral disc space to the lesion, and disrupted annulus fibrosus and indentation caused by the ring apophysis. We suggest aforementioned features, indicative of intervertebral disc lesions, to be checked when interpreting mass lesions around the intervertebral foramen.
조홍식,천세웅,이은신,윤철호,신희석,이창한 대한근전도전기진단의학회 2018 대한근전도 전기진단의학회지 Vol.20 No.1
Objective: To elucidate the involvement of motor and sensory fibers of the ulnar nerve in cases of work-related carpal tunnel syndrome (CTS) among orchardists and to determine the association between the severity of work-related CTS and ulnar neuropathy (UN). Method: 1,594 hands of 797 subjects were underwent electrodiagnostic (EDX) tests for median and ulnar nerves. Subjects were classified into three groups: non-CTS, non-UN+CTS, and UN+CTS group. The CTS group was classified into subgroups of CTS severity. Results: Significant differences were found in the conduction parameters of median and ulnar nerves (p < 0.001) among the three groups. Comparison of the mean values of non-CTS group and subgroups of CTS severity also showed significant differences in the conduction parameters of ulnar nerve (p < 0.05). In addition, the severity of CTS showed significant correlations with conduction parameters of the ulnar nerve (p < 0.05). Conclusion: Based on the severity of work-related CTS, we suggest that the pathological processes leading to CTS may affect the motor and sensory fibers of the ulnar nerve.
공민식,조홍식,이창한,천세웅,윤철호,신희석 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.1
Objective To evaluate femoral anteversion angle (FAA) change in children with intoeing gait depending on age, gender, and initial FAA using three-dimensional computed tomography (3D-CT). Methods The 3D-CT data acquired between 2006 and 2016 were retrospectively reviewed. Children 4 to 10 years of age with symptomatic intoeing gait with follow-up interval of at least 1 year without active treatment were enrolled. Subjects were divided into three groups based on age: group 1 (≥4 and <6 years), group 2 (≥6 and <8 years), and group 3 (≥8 and <10 years). Initial and follow-up FAAs were measured using 3D-CT. Mean changes in FAAs were calculated and compared. Results A total of 200 lower limbs of 100 children (48 males and 52 females, mean age of 6.1±1.6 years) were included. The mean follow-up period was 18.0±5.4 months. Average initial and follow-up FAA in children with intoeing gait was 31.1°±7.8° and 28.9°±8.2°, respectively. The initial FAA of group 1 was largest (33.5°±7.7°). Follow-up FAA of group 1 was significantly reduced to 28.7°±9.2° (p=0.000). FAA changes in groups 1, 2, and 3 were -6.5°±5.8°, -6.4°±5.1°, and -5.3°±4.0°, respectively. These changes of FAA were not significantly (p=0.355) different among the three age groups. However, FAA changes were higher (p=0.012) in females than those in males. In addition, FAA changes showed difference depending on initial FAA. When initial FAA was smaller than 30°, mean FAA change was -5.6°±4.9°. When initial FAA was more than 30°, mean FAA change was -6.8°±5.4° (p=0.019). Conclusion FAA initial in children with intoeing gait was the greatest in age group 1 (4–6 years). This group also showed significant FAA decrease at follow-up. FAA changes were greater when the child was a female, younger, and had greater initial FAA.
손재천,최세웅,Sohn, Jae-Cheon,Choi, Sei-Woong Korean Society of Applied Entomology 2016 한국응용곤충학회지 Vol.55 No.4
집나방과의 상제집나방(신칭, Saridoscelis kodamai Moriuti)을 한국과 중국에서 처음으로 기록한다. 또한, 상제집나방아과(신칭, Saridoscelinae)를 한국에서 처음으로 보고한다. 상제집나방의 성충 외형과 생식기의 사진을 제공한다. 국내에서 상제집나방의 발생에 관해 채집기기 및 기존의 기주식물 기록과 비교해 논의한다. An yponomeutid species, Saridoscelis kodamai Moriuti, is recorded from Korea and mainland China for the first time. Saridoscelinae are first recorded in the Korean fauna. Photos of external and genital features are provided for S. kodamai. Occurrence of S. kodamai in Korea is discussed in relation with the flight time and the distribution of their host plants.
Two species of Olethreutinae (Lepidoptera: Tortricidae) new to Korea
손재천,최세웅 국립생물자원관 2020 Journal of species research Vol.9 No.2
The Korean Olethreutinae comprises 277 species. In this study, two species of Olethreutinae: Hedya corni Oku, 1974 and Epinotia salicicolana Kuznetzov, 1968, are reported for the first time from Korea. Our records of Hedya corni are based on three specimens in both sexes from Islands Bogildo and Geojedo. The Korean record of Epinotia salicicolana is based on one male specimen from Muan-gun. The present records of Hedya corni represent the first occurrence out of Japan. Hedya corni is similar to Hedya inornata (Walsingham) but differs from the latter in having the reddish brown forewings. Epinotia salicicolana is similar to Epinotia solandriana (Linnaeus) but differs from the latter in having the smaller dorsal patch on the forewing. Habitus and genitalia of the two olethreutine species are illustrated and briefly described. Their bionomics and distribution are summarized. With our new records, the species numbers of the Korean Hedya and Epinotia are increased to 11 and 23, respectively.
손재천,김낭희,최세웅 국립중앙과학관 2017 Journal of Asia-Pacific Biodiversity Vol.10 No.4
Insect-feeding damage on plants provides insight into plant–insect interactions along environmental gradients. However, cataloging such damage has been limited for fossil flora or extant tropical vegetation. We explored the diversity of insect-feeding damage on Quercus mongolica; one of the major tree species in the East Asian temperate forests. Eighty-six types of damage were cataloged from five sites on three mountains in Korea. Each damage type identified from our study was compared to previously proposed types of damage. The possible or confirmed origin of each damage type was discussed. The diversity of the damage types was highest from Mt. Seongjusan, followed by Mt. Jirisan and Mt. Hallasan. The frequency of each damage type on the leaves varied among research sites. Damage involving sap-sucking arthropods and pathogenic fungi was most frequent and exhibited greater among-site variation among the eight functional categories.
손재천,김낭희,최세웅 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.3
Elevation is strongly associated with the diversity and ecology of plants and animals. We explored how elevation affects herbivores on one of the major cool-temperate trees, Quercus mongolica, in southern South Korea. The feeding activities of insect herbivores were measured through insect-feeding damage on leaves. Of 78 types of insect-feeding damage that were observed from Jirisan Mountain (Mount.) and Hallasan Mount. in Korea, 61.6% was associated with externally feeding insects. The sum of feeding damages per leaf was significantly higher on Jirisan Mount. than on Hallasan Mount., and higher at higher elevation in both mountains. Two feeding guilds, externally feeding, and piercing and sucking were strongly related with elevation, but the relationship was opposite depending on feeding guild. Leaf damage by the internal feeding guild showed no effect of elevation at the two mountains. These study results showed that insect herbivory responds to elevational differences in temperate forests, and that such response can vary among feeding guilds.
Four Species of Crambidae (Lepidoptera, Pyraloidea) New to Korea
손재천,김성수,최세웅,Sohn, Jae-Cheon,Kim, Sung-Soo,Choi, Sei-Woong Korean Society of Applied Entomology 2020 한국응용곤충학회지 Vol.59 No.3
풀명나방과의 Patania brevipennis (Inoue, 1982); Herpetogramma tominagai Yamanaka, 2003; Aethaloessa calidalis (Guenée, 1854); Anania subfumalis (Munroe et Mutuura, 1971) 등 4종을 국내 처음으로 기록한다. Aethaloessa속은 국내에서 처음으로 기록된다. 여기 기록한 종의 외형과 생식기 사진을 제공한다. 필요한 경우, 해당 종의 아종 관계와 국내 발생 상황에 대해 논한다. Four species of Crambidae, Patania brevipennis (Inoue, 1982); Herpetogramma tominagai Yamanaka, 2003; Aethaloessa calidalis (Guenée, 1854); Anania subfumalis (Munroe et Mutuura, 1971), are reported for the first time from Korea. The genus Aethaloessa is new to the Korean fauna. Photos of external and genital features are provided for those species. Subspecies assignment and occurrence status in Korea are discussed for Aethaloessa calidalis and Anania subfumalis.