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

PURPOSE: There is increasing awareness of the clinical importance of early detection and treatment of posterior cruciate ligament(PCL) injury. We evaluate the usefulness of Magnetic resonance(MR) imaging in the diagnosis of PCL injury. MATERIALS AND METHODS: We retrospectively analysed the MR images of 140 cases with clinically suspected knee injury. Arthroscopic or surgical correlation was available in 63 cases. We observed the finding and extent of PCL injury and other associated abnormalities. The frequency of anterior and posterior meniscofemoral ligament was evaluated. RESULTS: Eleven PCL injuries were observed, six midsubstance tears, two tibial attachment tears, two fernoral attachment tear, one laxity. The sensitivity, specificity and accuracy of MR imaging diagnosis are 100%, 98.1%, 98.4%. MR findings of PCL injury are discontinuity and focal mass formation, irregular increased signal intensity, detachment or redundancy of the ligament with avulsed bony fragment. In all cases of injured PCL, other associated abnormalities of adjacent structures were observed. Accessory anterior and posterior meniscofemoral ligaments were observed in 67.4%(87/129). CONCLUSION: MR imaging is useful in evaluation of presence or absence of PCL injury, accurate extent of PCL injury and other important associated abnormalities of adjacent structures.
Diagnosis ; Knee Injuries ; Ligaments ; Magnetic Resonance Imaging* ; Posterior Cruciate Ligament* ; Retrospective Studies ; Sensitivity and Specificity

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 the patterns of hemodynamic changes caused by various pathologic liver conditions. MATERIALS & METHODS: Combined CT hepatic arteriography(CTHA) and CT arterial portography(CTAP), performed in 185 consecutive patients, including 150 with hepatocellular carcinoma, were retrospectively analysed. Of these patients, 48 showed various patterns of hemodynamic change. such change caused by occlusion, stenosis and/or cavernous transformation of the portal vein, by occlusion or stenosis of the hepatic artery, or by the presence of arterioportal(AP) shunt could be classified as follows : type 1, decreased or absent portal flow ; type 2,decreased or absent hepatic arterial flow ; type 3, AP shunt without portal tumor thrombus(PTT) ; and type 4, PTT with transvasal AP shunt, including the presence of cavernous transformation of the portal vein. RESULTS: Type I (n=20) showed hyperattenuation of both PTT and absent portal flow area on CTHA, and reciprocally consistent hypoattenuation on CTAP. Type II (n=6) showed a hypoattenuating area on CTHA, and isoattenuation or slightly hyperattenuation on CTAP. Type III (n=9) showed an oval or wedge-shaped hyperattenuating area on CTHA, anddefective perfusion at the same area on CTAP. In Type IV (n=13), both CTHA and CTAP showed variable findings, according to the amount of transvasal AP shunt, the location and extent of PTT, and/or cavernous transformation ofthe portal vein. CONCLUSION: Pattern analyses of hemodynamic changes on both CTHA and CTAP are helpful inclarifying the primary causes of hemodynamic changes in the liver.
Angiography* ; Carcinoma, Hepatocellular ; Constriction, Pathologic ; Hemodynamics* ; Hepatic Artery ; Humans ; Liver* ; Perfusion ; Portal Vein ; Retrospective Studies

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: To evaluate the role of CT in early detection, location, and extent of osteochondritis dissecans (OCD) of the elbow joint. MATERIALS AND METHODS: We reviewed surgically proved 27 cases of 22 patients with osteochondritis dissecans in elbow joint retrospectively. We compared simple x-ray(elbow AP & lateral) with CT on the basis of staging of OCD of talus by simple x-ray. RESULTS: The frequency of location was as follows:fourteen cases of capitellum, 5 cases of olecranon tip, 5 cases of medial epicondyle, 2 cases of trochlea, and 1 case of olecranon base. Among the 4 cases of normal finding on simple x-ray, CT showed 1 case each of stage I, II, III, and IV OCD and among the 8 cases of stage I on simple x-ray, CT showed 2 cases of stage I, 1 case of stage II, and 5 cases of stage III. Among the 3 cases of stage II on simple x-ray, CT showed 1 case of stage II and 2 cases of stage III. Among the 5 cases of stage III on simple x-ray, CT showed 1 case of stage II, 2 cases of stage III, and 2 cases of stage IV, but it was difficult to detect the presence or absence of attachment between the articular cartilage of mother bone and osteochondral fragment. CT was more accurate than simple x-ray in detection of loose body. CONCLUSION: CT might be an useful imaging modality in early diagnosis of OCD and evaluation of its anatomic location and extent in elbow joint.
Cartilage, Articular ; Early Diagnosis ; Elbow Joint* ; Elbow* ; Humans ; Mothers ; Olecranon Process ; Osteochondritis Dissecans* ; Osteochondritis* ; Retrospective Studies ; Talus

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

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

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*