Journal of Yeungnam Medical Science

Ji Hyun Yeo

3 Articles

Ewing's Sarcoma of the Calcaneus: A Case Report.: Joon Hyuk Choi, Ji Hyun Yeo, Mi Jin Kim, Duck Seop Shin, Kil Ho Cho; Yeungnam Univ J Med. 2004;21(2):256-261. Published online December 31, 2004; DOI: https://doi.org/10.12701/yujm.2004.21.2.256

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Ewing's sarcoma is rarely found occurs in the bones of the hands and feet. We report a case of Ewing's sarcoma of the left calcaneus in a 15-year-old girl who complained of left heel pain and swelling. An open biopsy was performed and histological examination showed the proliferation of uniform small round cells. Immunohistochemical staining for CD99 showed diffuse strong positivity in the cytoplasmic membrane of the tumor cells. After preoperative chemotherapy, a below knee amputation was performed.

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Diagnoses, treatment, and oncologic outcomes in patients with calcaneal malignances: Case series, systematic literature review, and pooled cohort analysis
Erik T. Newman, Eveline A. J. Rein, Nina Theyskens, Marco L. Ferrone, John E. Ready, Kevin A. Raskin, Santiago A. Lozano Calderon
Journal of Surgical Oncology.2020; 122(8): 1731. CrossRef

Clinical Outcome of Ureteropelvic Junction Obstruction in the Pediatric and Adult Population.: Phill Hyun Song, Sang Taek Kwon, Ji Hyun Yeo, Yong Hoon Park, Ki Hak Moon; Yeungnam Univ J Med. 2004;21(1):67-73. Published online June 30, 2004; DOI: https://doi.org/10.12701/yujm.2004.21.1.67

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Abstract PDF: BACKGROUND
A ureteropelvic junction (UPJ) obstruction is a congenital anomaly commonly afflicting the pediatric population. However, it occurs more frequently in adults than is generally appreciated. To assess their characteristics, we have here compared and analyzed the clinical manifestations, causes, and outcomes of UPJ obstruction found in children and adults. MATERIALS AND METHODS: 102 patients (118 renal units) out of 182 patients (218 renal units), with diagnosed UPJ obstruction, were available for follow up. The follow-ups were retrospectively reviewed to determine the presenting symptoms, treatments, and clinical outcomes. Patients who were younger than 18 years of age were assigned to the pediatric group (44 patients), others the adult group (58 patents). RESULTS: The majority of the patients presented with flank pain (pediatric group: 68%, adult group: 76%). The majority of patients underwent a pyeloplasty (pediatric group: 50.9%, adult group: 62.3%). And the major cause of the UPJ obstruction was an intrinsic stenosis (pediatric group: 53%, adult group: 56%). CONCLUSION: The prevalence of bilateral UPJ obstruction in adults is evidently less prevalent than in pediatrics, and despite the late diagnosis, the surgical outcome is similar. A further investigation of UPJ obstruction will lead us to a more comprehensive understanding of the disease.

The Effects of Anticholinesterase Drugs on Gastric Motility.: Hyoung Chul Choi, Jong Ho Kim, Jeoung Hee Ha, Kwang Yoon Lee, Won Joon Kim, Dong Suk Kwak, Sung Hee Kim, Phil Hyun Song, Ji Hyun Yeo; Yeungnam Univ J Med. 1999;16(2):318-325. Published online December 31, 1999; DOI: https://doi.org/10.12701/yujm.1999.16.2.318

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Abstract PDF: BACKGROUND
Anticholinesterase drug inhibits acetylcholinesterase(AChE), induce accumulation of acetylcholine(ACh) near cholinergic receptors and cholinergic stimulation. This experiment was performed to study the effects of anticholinesterase drugs on gastric motility and the effect of ethanal on anticholinesterase drug-induced motility change. MATERIALS AND METHODS: After excision of stomach, 2x10mm circular musele strips were made, which were then fixed to the isolated muscle chamber. An isometric tension transducer was used to measure the contraction change of the gastric smooth muscle strips after drug addition. RESULTS: Fenthion, and irreversible anticholinesterase drug, increased ACh induced contraction of gastric smooth muscle strips and PAM, a cholinesterase activator, antagnized this action. Physostigmine, a reversible anticholinesterase drug, also increased the ACh induced contraction. The gastric motility was decreased by PAM. Ethanol, which is known to induce smooth muscle relaxation, inhibited the increase of contraction by fenthion. CONCLUSION: These results indicate that irreversible and reversible anticholinesterase drugs increase gastric motility and antagonized by cholinesterase activating drugs. And when exposed to both ethanol and anticholinesterase drug, gastric motility was decreased by the smooth muscle relaxation effect by ethanal.

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