1.Simultaneous Pancreatic Serous Microcystic Adenoma and Intraductal Papillary Mucinous Tumor of the Pancreas: A Case Report.
Hyoung Jong KWAK ; Young Kon KIM ; Baik Hwan CHO ; Woo Sung MOON
Korean Journal of Pathology 2011;45(Suppl 1):S29-S31
Serous cystadenomas of the pancreas account for approximately a third of pancreatic cystic neoplasms. Their coexistence with a second tumor is extremely rare. We now report a case of a serous microcystic adenoma combined with an intraductal papillary mucinous tumor of the pancreas in a 69-year-old man. Abdominal computed tomography scans demonstrated an incidental cystic mass in the body with cystic dilatation of the duct in the head of the pancreas. Central pancreatectomy with pancreatico-jejunostomy, and cyst excision of the pancreatic head were performed. Histologic examination demonstrated a serous microcystic cystadenoma in the body coexisting with an intraductal papillary mucinous adenoma in the head of the pancreas. This case study highlights the importance of careful intra-operative and pathologic examination for synchronous pancreatic tumors.
Adenoma
;
Aged
;
Cystadenoma
;
Cystadenoma, Serous
;
Dilatation
;
Head
;
Humans
;
Mucins
;
Pancreas
;
Pancreatectomy
;
Pancreatic Cyst
2.True Aneurysm of the Superficial Temporal Artery.
Jeong Wook LIM ; Kwang Chul CHO ; Hyoung Jong KWAK
Journal of the Korean Neurological Association 2012;30(3):207-209
This is a case report of a 50-year-old female who presented to our clinic with headache and left temporal pulsatile mass. Aneurysm was revealed incidentally on a computed tomography angiography of her head. Open surgical resection with aneurysmal trapping was performed under local anesthesia. Histological examination demonstrated a true aneurysm of the superficial temporal artery. There was loss of normal elastin in the internal elastin layer. This case report describes the rare entity along with a review of the literature.
Anesthesia, Local
;
Aneurysm
;
Angiography
;
Elastin
;
Female
;
Head
;
Headache
;
Humans
;
Middle Aged
;
Temporal Arteries
3.Findings of Perfusion MR Imaging in Acute Middle Cerebral Artery Territory Ischemic Stroke.
Nack Cheon CHOI ; Jae Hyoung KIM ; Ki Jong PARK ; Tae You KIM ; Sung Chul JEON ; Jun Hyeok KWAK ; Joon Gy HONG ; Oh Young KWON ; Byeong Hoon LIM
Journal of the Korean Neurological Association 1999;17(5):621-630
BACKGROUND: Although a magnetic resonance imaging (MRI) is highly sensitive for changes associated with ischemic stroke, the detection of an acute ischemic lesion is usually impossible within 6 hours of the stroke onset on a conventional MRI. The perfusion MRI is a new imaging technique for diagnosing acute ischemic stroke. We evaluate the clinical usefulness of the perfusion MRI in predicting the final infarct extent in 18 patients with acute middle cerebral artery (MCA) territory ischemic stroke. METHOD: The perfusion MRI was performed within 6 hours after the stroke onset in all patients with a single-section dynamic contrast-enhanced T2*-weighted imaging in conjunction with a conventional routine MRI and MR angiography. Time-concentration curves and cerebral blood volume (CBV) maps were calculated from the dynamic MR imaging data by using numerical integration techniques. We compared findings of CBV maps with infarction on a follow-up CT or MRI. RESULTS: In 14 of 18 patients, the CBV in the occluded MCA territory were decreased. In the remaining 4 patients with a reversible ischemic neurologic deficit (RIND) or transient ischemic attack (TIA), the CBV were increased in 3 and normal in 1. Out of 14 patients with a decreased CBV, two had focal regions of increased CBV within the affected territory, indicating reperfusion hyperemia. The regions of increased or decreased CBV were eventually converted to infarction on follow-up images in all 14 patients. Out of 4 patients with RIND or TIA, one showed focal infarction in centrum semiovale on a follow-up image. CONCLUSIONS: The perfusion MRI was useful for the assessment of hemodynamic change about cerebral perfusion and may predict the extent of final infarction in acute MCA territory ischemic stroke. These results suggest that the perfusion MRI may play an important role in the diagnosis and management of acute ischemic stroke.
Angiography
;
Blood Volume
;
Diagnosis
;
Follow-Up Studies
;
Hemodynamics
;
Humans
;
Hyperemia
;
Infarction
;
Ischemic Attack, Transient
;
Magnetic Resonance Imaging*
;
Middle Cerebral Artery*
;
Neurologic Manifestations
;
Perfusion*
;
Reperfusion
;
Stroke*
4.Pedunculated subpleural lipoma with incomplete torsion: A case report.
Hyoung Jong KWAK ; Eun Jung CHA ; Kyung Rak SOHN ; Ja Hong KUH ; Gong Yong JIN ; Myoung Ja CHUNG ; Kyu Yun JANG
Korean Journal of Medicine 2008;74(6):676-679
Lipoma is a common benign neoplasm, but lipoma arising from the pleura is rare. Most pleural lipomas are asymptomatic and are discovered incidentally on chest radiographs. Here we report an unusual case of a pedunculated subpleural lipoma with incomplete torsion in a 29-year-old woman who presented with flank pain. On chest radiography, there was a well-defined, ellipsoidal, homogeneous, radioopaque mass in the left lower lobe. An intrathoracic tumor was suspected, and video-assisted thoracic surgery was performed to establish the final diagnosis. The resected tumor was a 10 X 5 cm sized pedunculated pleural mass. The cut surface showed a yellow, well-circumscribed mass with areas of hemorrhage. Histologically, the tumor was composed of mature adipose tissue with fibrous septae composed of fibroblasts. The outer surface of the tumor was covered by mesothelial cells. Some areas were hypercellular, and occasional mitoses were found, but neither lipoblasts nor atypical mitoses were identified.
Adipose Tissue
;
Adult
;
Benzeneacetamides
;
Female
;
Fibroblasts
;
Flank Pain
;
Hemorrhage
;
Humans
;
Lipoma
;
Mitosis
;
Piperidones
;
Pleura
;
Thoracic Surgery, Video-Assisted
;
Thorax
5.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 University Journal of Medicine 1999;16(2):318-325
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.
Acetaldehyde
;
Cholinesterase Inhibitors*
;
Cholinesterases
;
Ethanol
;
Fenthion
;
Muscle, Smooth
;
Physostigmine
;
Receptors, Cholinergic
;
Relaxation
;
Stomach
;
Transducers
6.Analysis of Risk Factors for Ileus Following Radical Cystectomy: Is the Prolonged Use of a Nasogastric Tube Necessary?.
Hyoung Keun PARK ; Sang Wook LEE ; Woon Geol YEO ; Cheol KWAK ; Seok Soo BYEON ; Hyeon Hoe KIM ; Eun Sik LEE ; Jong wook LEE ; Sang Eun LEE
Korean Journal of Urology 2004;45(12):1215-1218
PURPOSE: We examined the risk factors for postoperative ileus, and we investigated whether the duration of postoperative nasogastric tube (NGT) use affects the rate of postoperative ileus in patients undergoing radical cystectomy with urinary diversion. MATERIALS AND METHODS: A total of 101 patients underwent radical cystectomy with urinary diversion from 1999 to 2003. We examined the demographic and perioperative variables of patients who developed postoperative ileus and those who did not. We divided the patients into two groups; a group of patients who had the NGT removed within 24 hours and a group of patients who had the NGT removed at first flatus. We compared the two groups for the incidence of ileus and for the clinical variables. RESULTS: Postoperative ileus was observed in 23 patients (23%). The demographic data for both groups were not different in terms of age and the American Society of Anesthesiology (ASA) score. Also, the operative time, estimated blood loss, the type of diversion and the postoperative complication rates were not significantly different for the two groups (p>0.05). However, the risk of postoperative ileus was significantly higher for those patients who took a polyethylene glycol bowel preparation than for those who took a sodium phosphate bowel preparation (40%:18%, p=0.02). No significant difference in the prevalence of ileus was found between the patients whose NGT were removed within 1 days and those patients whose NGT was removed beyond 2 days (25%:22%, p>0.05). CONCLUSIONS: The results of our study suggest that the use of sodium phosphate for bowel preparation may reduce postoperative ileus and that early NGT removal after cystectomy is not correlated with ileus.
Anesthesiology
;
Cystectomy*
;
Flatulence
;
Humans
;
Ileus*
;
Incidence
;
Intestinal Obstruction
;
Operative Time
;
Polyethylene Glycols
;
Postoperative Complications
;
Prevalence
;
Risk Factors*
;
Sodium
;
Urinary Diversion
7.An Elderly Female Non-smoker with Primary Small Cell Carcinoma of the Urinary Bladder.
Nam Yeol CHO ; Seung Suk KIM ; Hyeong Ju SUN ; Kyoung Sun PARK ; Yu Ah CHOI ; In Wook JANG ; Hyoung Jong KWAK
Keimyung Medical Journal 2015;34(2):209-215
Small cell carcinoma (SCC) primarily arises in the lung. Cases of primary extrapulmonary small cell carcinoma are uncommon, and may develop in various different organs. In particular, small cell carcinoma of the urinary bladder is very rare in female nonsmokers, and its prognosis is poor. The main part of treatment in SCC is a chemotherapy, which is a critical factor in its prognosis. In the present report, we describe the case of an 82-year-old female non-smoker who underwent transurethral resection of bladder tumor (TURBT) without chemotherapy for small-cell carcinoma of the bladder, and experienced a relapse at a same area to the primary tumor site.
Aged*
;
Aged, 80 and over
;
Carcinoma, Small Cell*
;
Drug Therapy
;
Female*
;
Humans
;
Lung
;
Prognosis
;
Recurrence
;
Urinary Bladder Neoplasms
;
Urinary Bladder*
8.A Case of Single Mass Forming Hepatic Tuberculoma.
Yu Ah CHOI ; Se Woong HWANG ; Nam Yeol CHO ; Hyeong Ju SUN ; Yun Myoung KO ; Shin Hee LEE ; Hyoung Jong KWAK
Keimyung Medical Journal 2015;34(2):197-203
Tuberculosis mainly develops in the lung, but may also rarely invade other parts of the abdominal region. Abdominal tuberculosis is associated with pulmonary tuberculosis in approximately 15% of cases, and abdominal tuberculosis primarily develops in the terminal ileum and lymphatic gland. Moreover, hepatic tuberculosis is uncommon and is usually accompanied with active pulmonary or miliary tuberculosis. Hence, the development of primary hepatic tuberculoma as a single liver mass is very unusual. In the present report, we describe the case of a 63-year-old man with a solitary hepatic tuberculoma; the 6.4 cm mass was incidentally detected during abdominal computed tomography in the asymptomatic patient, and the diagnosis was confirmed by liver biopsy through ultrasonography-guided fine-needle aspiration.
Biopsy
;
Biopsy, Fine-Needle
;
Diagnosis
;
Humans
;
Ileum
;
Liver
;
Lung
;
Middle Aged
;
Tuberculoma*
;
Tuberculosis
;
Tuberculosis, Hepatic
;
Tuberculosis, Miliary
;
Tuberculosis, Pulmonary
9.Initial Experience of ACE68 Reperfusion Catheter in Patients with Acute Ischemic Stroke Related to Internal Carotid Artery Occlusion
Hyoung Gyu JANG ; Jung Soo PARK ; Jong Myong LEE ; Hyo Sung KWAK
Journal of Korean Neurosurgical Society 2019;62(5):545-550
OBJECTIVE: Penumbra ACE68 reperfusion catheter is a new large bore aspiration catheter used for reperfusion of large vessel occlusion. The objective of this study was to investigate the efficacy of this catheter in comparison to that of previous Penumbra catheters in patients with acute ischemic stroke related to internal carotid artery (ICA) occlusion.METHODS: Data of all eligible patients who received endovascular treatment (EVT) for ICA occlusion using Penumbra aspiration catheters between January 2015 and December 2018 were retrospectively reviewed. After dividing into two groups according to use of penumbra ACE68, baseline characteristics of patients, successful recanalization rate, puncture to recanalization time, and switch to stent base technique rate were assessed. Successful recanalization was defined by a thrombolysis in cerebral infarction (TICI) score ≥2b and favorable functional outcome was defined according to modified Rankin scale (score, 0–2).RESULTS: ACE68 reperfusion catheter was used in 29 of 75 eligible patients (39%). The puncture to recanalization time was significantly shorter (26±18.2 minutes vs. 40±24.9 minutes, p=0.011) and the rate of switch to stent-based retrieval was significantly lower (3% vs. 20%, p=0.046) in ACE68 catheter group. Moreover, although not statistically significant, the successful recanalization rate was higher (83% vs. 76%, p=0.492) in ACE68 catheter group. Favorable functional outcome was observed in 48% of patients treated with ACE68 reperfusion catheter and in 30% of patients treated using other Penumbra systems (p=0.120). Baseline Alberta Stroke Program Early CT Scores ≥8 (odds ratio [OR], 9.74; 95% confidence interval [CI], 1.72–54.99; p=0.010) and successful recanalization (OR, 10.20; 95% CI, 1.13–92.46; p=0.039) were independent predictors of favorable outcome.CONCLUSION: EVT using ACE68 reperfusion catheter can be considered a first-line therapy in patients with acute ICA occlusion as it can achieve rapid recanalization and reduce the frequency of conversion to stent-retrieve therapy.
Alberta
;
Brain Ischemia
;
Carotid Artery, Internal
;
Catheters
;
Cerebral Infarction
;
Humans
;
Punctures
;
Reperfusion
;
Retrospective Studies
;
Stents
;
Stroke
;
Thrombectomy
10.Effects of the Mixture of Vitamin C, Vitamin E, Pycnogenol and Evening Primrose Oil on the UV-Induced Pigmentation and Wrinkle Reductions in Human Skin.
Min Youl CHANG ; Sang Ki PARK ; Taek Jong KWAK ; Hyoung Kook PARK ; Cheon Koo LEE ; Heon Sik LEE ; Sun Yung LY ; Seong Jin KIM
The Korean Journal of Nutrition 2009;42(6):516-522
In this study, the effects of a mixture consisting of vitamin E, vitamin C, pycnogenol and evening primrose oil (mixture LGNC-5) on ultraviolet light (UV) induced pigmentation and wrinkle reductions of normal healthy volunteers were studied. In a double-blind placebo-controlled study, each of 54 subjects took daily either 4 capsules of the mixture LGNC-5 (Group ABC; 282.5 mg/capsule) or placebo (Group Ganada). We irradiated 2.5 MED UV on the upper arms and measured the whitening effect by colorimeter-based L value. The level of wrinkle reduction was determined by image analysis using skin replica around the crow' feet, and the level of serum vitamin E was determined at baseline and 12 weeks. After 12-week oral administration, the treated group showed a significant reduction in skin pigmentation and wrinkles compared with the placebo group (p = 0.011 and p = 0.000005 , respectively). Also, the level of serum vitamin E was significantly increased in the treated group after 12-week oral adminstration of the mixture compared with that in the placebo group (p = 0.0001). In conclusion, 12-week oral administration of LGNC-5 as a dietary supplement could be effective to reduce both UV induced pigmentation and skin wrinkle without side effects.
Administration, Oral
;
Arm
;
Ascorbic Acid
;
Capsules
;
Dietary Supplements
;
Flavonoids
;
Foot
;
gamma-Linolenic Acid
;
Humans
;
Linoleic Acids
;
Oenothera biennis
;
Pigmentation
;
Plant Oils
;
Skin
;
Skin Pigmentation
;
Ultraviolet Rays
;
Vitamin E
;
Vitamins