PURPOSE: To determine the diagnostic performance of contrast-enhanced multidetector CT (MDCT) and the Alvarado score for acute appendicitis. MATERIALS AND METHODS: MDCT and determination of the Alvarado score were prospectively performed in 282 patients with 146 pathologically proven cases of acute appendicitis and 136 pathologically proven or clinically diagnosed cases of non-acute appendicitis. To compare the diagnostic performance of MDCT and the Alvarado score, the patients were subdivided according to age and sex, and receiver operating characteristics (ROC) analysis and Spearman rank correlation were performed. RESULTS: ROC analysis revealed that the optimal cut off value of the CT appendicitis grades was 2 in all patients, resulting in a sensitivity of 96.6% and a specificity of 94.9%. The optimal cut off values of the Alvarado score was different according to age and sex, resulting in a sensitivity of 85.6% and a specificity of 48.5%. There was a significant correlation between the CT appendicitis grades and the surgical-pathological grades (r=0.496, p<.0001). However, no significant correlation was observed between the Alvarado score and the surgical-pathological grades. CONCLUSION: Contrast-enhanced MDCT has a higher diagnostic accuracy and significant correlation with pathological findings than those of the Alvarado score in patients with acute appendicitis.
Acute Disease ; Appendicitis* ; Humans ; Prospective Studies* ; ROC Curve ; Sensitivity and Specificity

We report here on an uncommon case of peliosis hepatis with hemorrhagic necrosis that was complicated by massive intrahepatic bleeding and rupture, and treated by emergent right lobectomy. We demonstrate the imaging findings, with emphasis on the triphasic, contrast-enhanced multidetector CT findings, as well as reporting the clinical outcome in a case of peliosis hepatis with fatal hemorrhage.
Tomography, X-Ray Computed/*methods ; Rupture ; Peliosis Hepatis/complications/*radiography/surgery ; Necrosis ; Humans ; Hemorrhage/etiology/*radiography/surgery ; Female ; Adult

PURPOSE: Meniscocapsular(MC) separation in knee joint can deteriorate joint function and must be repaired in arthroscopy. We investigated retrospectively MR imaging findings in order to find out its validity for accurate diagnosis & early treatment. MATERIALS AND METHODS: From Jan. 1998 to Dec. 1999, among the patients treated with MC tear under the arthroscopy, MRI findings was evaluated in 31 patients(18 cases: medial, 13 cases: lateral) at retrospectively. RESULTS: The important findings in medial meniscus were that fluid collection meniscus and MCL was 12 cases(67k) and increased distance between meniscus and capsule was 10 cases(56%), but in lateral meniscus, perimeniscal swelling was 10 cases(77%), and menisco-tibial extension rupture was 8 cases(62%). CONCLUSION: The important MR findings for the MC tear were the increasing distance or fluid between meniscus and joint capsule or MCL at medial meniscus, and perimeniscal swelling, menisco-tibial extension rupture at lateral meniscus.
Arthroscopy ; Diagnosis ; Humans ; Joint Capsule ; Joints ; Knee Joint ; Knee* ; Magnetic Resonance Imaging* ; Menisci, Tibial ; Retrospective Studies ; Rupture