It was found to be the same case with the published article.

No abstract available.
Animals ; Calcinosis ; Echinococcosis, Hepatic/diagnosis/*parasitology/surgery ; Echinococcus granulosus/*isolation & purification ; Hepatectomy ; Humans ; Liver/*parasitology/pathology/radiography/surgery ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Tomography, X-Ray Computed

PURPOSE: To evaluate and compare the accuracy of magnetic resonance imaging (MRI) and ultrasound (US) for detection and estimation of invasion depth of colorectal carcinoma (CRC) by correlation with histopathologic findings in vitro, and to find out the best MR pulse sequence for accurate delineation of tumor from surrounding normal tissue. MATERIALS AND METHODS: Resected specimens of CRC from 45 patients were examined about tumor detectability and invasion depth of US using high frequency (5-17 MHz) linear transducer in a tube filled with normal saline and MRI in a 8-channel quadrate head coil. The institutional review board approved this study and informed consent was waived. MRI with seven pulse sequences of in- and out-of-phases gradient echo T1 weighted images, fast spin echo T2 weighted image and its fat suppression image, fast imaging employing steady-state acquisition (FIESTA) and its fat suppression image, and diffusion weighted image (DWI) were performed. In each case, both imaging findings of MRI and US were evaluated independently for detection and estimation of invasion depth of tumor by consensus of two radiologists and were compared about diagnostic accuracy according to the histopathologic findings as reference standard. Seven MR pulse sequences were evaluated on the point of accurate delineation of tumor from surrounding normal tissue in each specimen. RESULTS: In specimens of CRC, both imaging modalities of MRI (91.1%) and US (86.7%) showed relatively high diagnostic accuracy to detect tumor and evaluate invasion depth of tumor. In early CRC, diagnostic accuracy of US was 87.5% and that of MRI was 75.0%. There was no statistically significant difference between two imaging modalities (p > 0.05). The best pulse sequence among seven MR sequences for accurate delineation of tumor from surrounding normal tissue in each specimen of CRC was fast spin echo T2 weighted image. CONCLUSION: MRI and US show relatively high diagnostic accuracy to detect tumor and evaluate invasion depth of resected specimen of CRC. The most excellent pulse sequence of MRI for accurate delineation of tumor from surrounding normal tissue in CRC is fast spin echo T2 weighted image.
Colorectal Neoplasms ; Consensus ; Diffusion ; Ethics Committees, Research ; Head ; Humans ; Informed Consent ; Magnetic Resonance Imaging ; Transducers

BACKGROUND: The use of intravenous contrast media (CM) has increased for the diagnosis of several diseases. The newly developed low osmolar nonionic contrast agents cause significantly decreased adverse reactions than the higher osmolar ones. However, adverse reactions may still occur, ranging in severity from minor side effects to severe complications. However, there have been few reports about cutaneous adverse reactions (CARs) to nonionic monomer CM. OBJECTIVE: The purpose of this study was to evaluate clinical features of CAR to intravenous nonionic monomer CM. METHODS: A total 47,338 examinees underwent intravenous iodinated contrast-enhanced computed tomography scan using nonionic monomer CM. Among the adverse reactions to the CM, we divided them into cutaneous or noncutaneous and immediate (<1 hr) or late (> or =1 hr) adverse reactions. RESULTS: Adverse reactions were noted in 62 cases out of the total 47,338 cases; 50 cases (80.7%) were categorized CARs. Among them, there were 24 male and 26 female patients. There was no significant difference between the sexes, and CARs occurred in all age groups. The highest occurrence was in the age range of 50~59 years. CARs included urticaria (78%), angioedema (10%), maculopapular rash (8%), erythema (2%), and pruritus without rash (2%). Immediate reactions were 92% (46 cases), while late reactions were 8% (4 cases). CONCLUSION: CARs to nonionic monomer CM accounted for most of the adverse reactions (80.7%) and urticaria was the most common.
Angioedema ; Contrast Media ; Erythema ; Exanthema ; Female ; Humans ; Korea ; Male ; Pruritus ; Urticaria

Acalculous hemorrhagic cholecystitis is a rare complication of acute cholecystitis and is associated with a high mortality rate. We present a case of acalculous hemorrhagic cholecystitis with hematoma in the gallbladder lumen, which was diagnosed using magnetic resonance imaging (MRI). The T1- & T2-weighted MRI revealed gallbladder distension with a hypointense intraluminal hematoma. The excellent tissue contrast provided by MRI is useful for detecting hematomas in the cases of hemorrhagic cholecystitis.
Acalculous Cholecystitis ; Cholecystitis ; Cholecystitis, Acute ; Gallbladder ; Hematoma ; Magnetic Resonance Imaging

PURPOSE: To evaluate and compare the diagnostic accuracy of MRI and ultrasound(US) for estimation of invasion depth of gastric carcinoma by correlation with histopathologic findings in vitro and to find out the best MR pulse sequence for detection and accurate delineation of tumor. MATERIALS AND METHODS: Resected specimen of total or subtotal gastrectomy from 53 patients with gastric carcinoma were done of imaging studies of MRI and US. And US was examined by using high frequency linear transducer for tumor invasion depth by a radiologist. In each case, both imaging findings of MRI and US were evaluated independently for tumor detection and invasion depth by consensus of two radiologists and were compared the diagnostic accuracy between two imaging modalities according to the histopathologic findings. MR imaging with five MR pulse sequences, spin echo T1 and in- and out-ofphase gradient echo T1 weighted images, FSE and SSFSE T2 weighted images, were performed. Five MR pulse sequences were evaluated and compared on the point of detection and accurate distinction of tumor from surrounding normal tissue. RESULTS: In EGC, diagnostic accuracy of US(77%) was superior than that of MRI(59%) but no statistically significant difference was noted between two imaging modalities(p=0.096). In AGC, both imaging modalities of MRIand US showed relatively high diagnostic accuracy as 97% and 84% respectively. Diagnostic accuracy of MRI was statistically better than that of US at the significant level(p<0.001). The best MR pulse sequence among five in each specimen was FSE T2WI(75.5%, 40/53) in both EGC and AGC. In AGC, FSE T2WI showed excellent imaging quality by showing very high ratio (93.5%, 29/31) of accurate delineation of tumor. CONCLUSION: MRI and US show relatively high diagnostic accuracy in the evaluation of tumor invasion depth of resected specimen in AGC. The most excellent pulse sequence of MRI for the evaluation of tumor invasion depth is FSE T2WI on the point of detection and accurate delineation of tumor in both EGC and AGC.
Consensus ; Gastrectomy ; Humans ; Transducers

PURPOSE: One of the most serious complications of benign prostatic hyperplasia (BPH) is acute urinary retention (AUR). Up to now, many papers have evaluated the short term treatment of patients with AUR that is due to BPH. Therefore, we evaluated the long term follow-up of BPH patients with AUR. MATERIALS AND METHODS: 154 BPH patients with AUR were divided into two groups. One group was considered to be the failure cases of urethral catheter removal, and this group (55 patients) had undergone immediately transurethral resection of prostate (TURP). The other group was considered to be the successful cases of urethral catheter removal. The latter group was divided into 3 groups: the alpha-blocker group, the alpha-blocker with 5alpha- reductase inhibitor group and the suprapubic cystostomy with medical treatment group. We evaluated the long term follow-up of these groups and the changes of treatment for 1 month, 3 months, 6 months and 12 months. RESULTS: The mean volume of the prostate was 54.2ml. When the patients were admitted to the hospital due to AUR, 53% of the patients had previously experienced AUR, and the mean number of previous AUR episodes were 1.4 times. The initial management of AUR due to BPH was urethral catheter indwelling with medical treatment. If the catheter removal failed, TURP was perfomed (35%) and when successful, medical treatment was then done. CONCLUSIONS: The primary management of AUR due to BPH is urethral catheter indwelling with medical treatment (alpha-blocker). However, if the patients have a large size prostate, we should first consider hormone treatment (5alpha-reductase inhibitor) rather than surgical treatment. The management methods of some patients were changed during the follow-up. Therefore, when following up these cases, we should be careful to prevent the recurrence of AUR and to allow self-voiding.
Acute Disease ; Catheters ; Cystostomy ; Follow-Up Studies* ; Humans ; Oxidoreductases ; Prostate ; Prostatic Hyperplasia* ; Recurrence ; Transurethral Resection of Prostate ; Urinary Catheters ; Urinary Retention*

Gastrointestinal malignant fibrous histiocytomas (MFH) are very rare and only about 30 cases have been reported in the English literature, among which 20 cases were from colorectal MFHs. A small bowel MFH with intussusception has been the only reported case in the Korean medical literature. A 52-year-old male presented with complaints of recently developed and aggravated right upper abdominal pain. We present the CT appearance and the clinico-pathologic findings of his primary inflammatory malignant fibrous histiocytoma, which arose from the subserosal layer of the ascending colon with tumor infiltration in all the layers. The colon showed extensive hemorrhagic necrosis and repetitive multifocal microperforations with resultant panperitonitis.
Abdominal Pain ; Colon* ; Colon, Ascending ; Histiocytoma ; Histiocytoma, Malignant Fibrous* ; Humans ; Intussusception ; Male ; Middle Aged ; Necrosis

Gastric schwannoma is a rare benign intramural tumor arising from the stomach, and it accounts for only 0.1% of all the different kinds of gastric neoplasms, and it's less than 4% of all the benign gastric tumors. This tumor is very difficult to differentiate from the other mesenchymal tumors by the clinical, endoscopic and radiologic findings. In this study, we demonstrate the appearance of this tumor on endoscopic ultrasound and contrast-enhanced abdomen CT. We also show the histopathologic findings of a surgically confirmed gastric schwannoma that was located in the proper muscle layer.
Abdomen ; Neurilemmoma* ; Stomach ; Stomach Neoplasms ; Ultrasonography

OBJECTIVE: To evaluate the changes in mammographic density by different types of hormone replace therapy (HRT) in postmenopausal women. METHODS: A total of 150 postmenopausal women who received same HRT regimen for 1 year were classified as the four groups according to the regimen of HRT; 1) daily conjugated equine estrogen (CEE) 0.625 mg+medroxiprogesterone acetate (MPA) 2.5 mg (CEE/MPA-continuous, n=42), 2) daily CEE 0.625 mg+MPA 10 mg on days 1-12 (CEE/MPA-cyclic, n=28), 3) daily CEE 0.625 mg (CEE only, n=40), 4) daily tibolone 2.5 mg (Tibolone, n=40). And 40 women were allocated as control group. The changes in mammographic density in each group were compared with before and after HRT for 1 year. RESULTS: The increase in mammographic density after 1 year of HRT was significantly higher in CEE/MPA-continuous group and CEE/MPA-cyclic group compaired with control group (p<0.05), and was not observed in CEE only group and tibolone group. CONCLUSION: Our results suggest that greater increase of mammographic density in postmenopausal women was significantly associated with estrogen/progestin combination therapy.
Estrogens ; Female ; Humans ; Mammography