Recent technological advances have made magnetic resonance images (MR) of the knee a clinical reality. MR is rapidly replacing the conventional arthrography as the imaging modality of choice of the knee joints. To evaluate the diagnostic accuracy of MR in the internal derangement of the knee. MR findings of 244 menisci and 488 ligaments of 122 knees were correlated with those of subsequent arthroscopy or surgery in all cases. The sensitivity, specificity, and accuracy of MR diagnosis for the medial meniscus were 87%, 93%, 91%, for the lateral meniscus 91%, 95%, 93%, for the anterior cruciate ligament 80%, 97%, 92%, for the posterior cruciate ligamant 73%, 99%, 97%, for the medial collateral ligament 67%, 100%, 99%, for the lateral collateral ligament 100%, 100% and 100%. These results imply that MR is an excellent diagnostic modality in the preoperative evaluation of clinically suspected internal derangement of the knee.
Anterior Cruciate Ligament ; Arthrography ; Arthroscopy ; Collateral Ligaments ; Diagnosis ; Knee ; Knee Joint ; Lateral Ligament, Ankle ; Ligaments ; Magnetic Resonance Imaging* ; Menisci, Tibial ; Sensitivity and Specificity

Recent technological advances have made magnetic resonance images (MR) of the knee a clinical reality. MR is rapidly replacing the conventional arthrography as the imaging modality of choice of the knee joints. To evaluate the diagnostic accuracy of MR in the internal derangement of the knee. MR findings of 244 menisci and 488 ligaments of 122 knees were correlated with those of subsequent arthroscopy or surgery in all cases. The sensitivity, specificity, and accuracy of MR diagnosis for the medial meniscus were 87%, 93%, 91%, for the lateral meniscus 91%, 95%, 93%, for the anterior cruciate ligament 80%, 97%, 92%, for the posterior cruciate ligamant 73%, 99%, 97%, for the medial collateral ligament 67%, 100%, 99%, for the lateral collateral ligament 100%, 100% and 100%. These results imply that MR is an excellent diagnostic modality in the preoperative evaluation of clinically suspected internal derangement of the knee.
Anterior Cruciate Ligament ; Arthrography ; Arthroscopy ; Collateral Ligaments ; Diagnosis ; Knee ; Knee Joint ; Lateral Ligament, Ankle ; Ligaments ; Magnetic Resonance Imaging* ; Menisci, Tibial ; Sensitivity and Specificity

Subcutaneous granuloma annulare (SGA) is a rare, benign noninfectious histiocytic disease of unknown cause, characterized by necrobiosis of the connective tissue surrounded by infiltrates of histiocytes and lymphocytes. We report a case of SGA in a 49/12-year-old boy. The lesions were five nontender subcutaneous nodules in the parieto-occipital scalp, measuring 1.0 cm to 2.0 cm in diameter. Microscopical examination revealed variable stages of multiple necrobiotic areas, which showed central necrobiosis with palisading histiocytes, involving both the lower dermis and subcutaneous fatty tissue. Electron microscopic findings revealed many histiocytes in the necrobiotic areas with degenerating and necrotic collagen fibers as well as regenerating fibroblasts.

This study is verifying the hypothesis that distraction followed by recompression may promote fracture healing of the osteoporotic bone on the assumption that distraction induces increased callus formation at the distracted gap and recompression results in fusiform callus, having biomechanically stronger fracture stiffness. Sixty-six Sprague-Dawley rats, in which osteoporosis were induced 6-8 weeks after oophorectomy, were separated into two groups. Group I was control group that had fracture healing by simple external fixation. Group II was experimental group that had fracture healing by monofocal distraction-compression. Radiomorphometric study revealed that there was significantly increased amount of callus and ensuing bone formation, which becehe obvious from 20 days after osteotomy in group II compared with group I. Biomechanical study also showed that tensile break strength was significantly higher in group II compared with group I with time. It is concluded that monofocal distraction-compression method may be one of the useful method to promote fracture healing of the estrogen deficient osteoporotic bone.
Animals ; Bony Callus ; Estrogens ; Female ; Fracture Healing* ; Osteogenesis ; Osteoporosis* ; Osteotomy ; Ovariectomy ; Rats* ; Rats, Sprague-Dawley

No abstract available.

Moyamoya disease is an occlusive cerebrovascular disease characterized by stenosis or occlusion of main cerebral arteries. The etiology of moyamoya disease is still unclear, but the frequent familial occurrence suggests that some genetic factors may contribute to its etiology. In Korea, though the moyamoya disease is not infrequent, its familial occurrence has not been reported yet. We report four female patients(in two families) of moyamoya disease with its familial occurrence. Two patients are siblings and the other two are mother and daughter. The ages of symptom onset were thirties in three patients and sixties in one patient. Three patients had intracerebral hemorrhage including intraventricular hemorrhage(recurrent in two). We got cerebral angiography in three patients and magnetic resonance angiography (MRA) in one patient. Full laboratory evaluations were done in three patients, including HLA typing in two patients(mother and daughter). All the patients did not have any hereditary disease or any other disease which are known to cause moyamoya-like changes. Considering the reported familial incidence in Japan, careful search for the family members would reveal much more familial cases in Korea also.
Cerebral Angiography ; Cerebral Arteries ; Cerebral Hemorrhage ; Constriction, Pathologic ; Female ; Genetic Diseases, Inborn ; Histocompatibility Testing ; Humans ; Incidence ; Japan ; Korea ; Magnetic Resonance Angiography ; Mothers ; Moyamoya Disease* ; Nuclear Family ; Siblings

Roberts syndrome is an autosomal recessive disorder accompanied by limb defects, craniofacial abnormalities, pre-and postnatal growth retardation. Patients with Roberts syndrome have characteristic premature separation of heterochromatin of many chromosomes and abnormalties in celldivision cycle. We have experienced a case of Roberts syndrome in an immature neonate The patients showed characteristic clinical features of multiple, severe facial mid-line clefts, and tetraphoco-amelia. The brief review of the literlature was made.
Craniofacial Abnormalities ; Ectromelia ; Extremities ; Heterochromatin ; Humans ; Infant, Newborn

No abstract available.
Budesonide* ; Humans

PURPOSE: To compare the usefulness of three MR sequences for the depiction and staging of advanced gastriccancer (AGC). MATERIALS AND METHODS: MR imaging was performed in 20 patients in whom AGC was proven by endoscopy.Axial scans with T1-weighted fast low-angle shot (FLASH), T2-weighted turbo spin-echo (TSE), and true fast imagingwith steady state precession (TrueFISP) MR sequences were obtained. We measured the signal-to-noise ratio (S/N) ofgastric cancer and signal difference-to-noise ratio (SD/N) between cancer and intraluminal fluid, cancer and thepancreas, and cancer and perigastric fat in each MR sequence. We also graded lesion conspicuity (poor, fair, orgood), and the degree of serosal invasion in each sequence. All results were correlated with histopathologicfindings. RESULTS: TrueFISP was superior to FLASH or TSE in lesion conspicuity, and showed the highest value ofSD/N between cancer and intraluminal fluid. FLASH showed the highest value of SD/N between cancer and thepancreas, and cancer and perigastric fat. The accuracy of T-staging of AGC with MRI was 75% using FLASH, 70% usingTrueFISP, and 60% using TSE. FLASH sequence understaged in three cases(15%) and overstaged in two (10%). In Usingthe TrueFISP sequence, six cases(30%) were overstaged. CONCLUSION: TrueFISP showed the best lesion conspicuity,but tended to overstage the lesion. T1-weighted FLASH sequence showed the highest value of SD/N on theextraluminal side of the gastric wall, and was better than T2-weighted TSE or TrueFISP for T-staging of AGC.
Humans ; Magnetic Resonance Imaging* ; Signal-To-Noise Ratio ; Stomach Neoplasms*

The traffic accident was one of most common cause for the facial bone fracture. When it involved the midfacial structures, the nasal bone fracture was usually shown. If the reduction was not done in time, it would result in facial deformity. Simple case could be corrected by simple rhinoplasty. However, severe cases would require more invasive technique. We used triangular osteotomy included the nasal bones, the vomer, and the medial wall of maxilla for the correction of post-traumatic nasal deformity and reported the result with the review of literatures.
Accidents, Traffic ; Congenital Abnormalities* ; Facial Bones ; Maxilla ; Nasal Bone ; Osteotomy* ; Rhinoplasty ; Vomer