Fabella, a small ossicle at the posterolateral aspect of the knee, is potentially a source of knee pain. Although fabella syndrome is a rare cause of knee symptoms in young adults, osteocartilaginous ...degeneration prominent in the fabellofemoral joint on magnetic resonance imaging may be commonly seen in elderly patients.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Synovial fat deposition, also known as lipoma arborescens, is a rare articular disorder with villous synovial proliferation, commonly seen in the knee. We explored the relationship between the degree ...of synovial fat deposition on the magnetic resonance imaging (MRI) and the severity of degenerative joint disorder, also called osteoarthritis, on plain radiography. The enrolled patients underwent MRI with a 0.4T permanent magnetic unit in a single institution over a 9-month period. The indications of MRI were chronic knee disorder of non-specific cause. Patients with minor trauma were also included. Consecutive 1,091 knees of 1,075 patients were assessed for the degree of synovial fat deposition on MRI and the severity of degenerative joint disorder on plain radiography. The degenerative joint disorder was graded by radiographic features obtained within one month from MRI using Kellgrene-Lawrence (K-L) scores. MRI features of synovial fat deposition were classified as none, mild and severe. Synovial fat deposition was identified in 30 knees of 29 patients (2.7%) (11 men and 18 women; aged from 25 to 86 years, one patient with bilateral lesions): one female patient with osteoarthritis secondary to rheumatoid arthritis and 28 patients with degenerative joint disorder. The K-L grade was 4 in the case of rheumatoid arthritis. There was a moderate positive correlation between the K-L grade and fat deposition grade (correlation coefficient: 0.59, p < 0.001). Thus, synovial fat deposition was noted in the advanced degenerative joint disorder. We propose that fat deposition represents a nonspecific secondary phenomenon of degenerative joint disorder.
Computed tomography (CT) is the imaging tool of choice in the diagnosis of temporal bone lesions. With the recent progress in imaging technology, CT with higher spatial resolution (Ultra-high ...resolution CT) has become available in the clinical setting. The purpose of this study is to evaluate the visibility of small temporal bone structures using ultra-high resolution CT.
The visibility of 27 minute temporal bone structures on ultra-high resolution CT images was evaluated. Non-helical axial scans were performed in 18 normal hearing ears without previous otologic diseases. Visibility was scored by an experienced radiologist and otologist.
Minute temporal bone structures including the ossicular chain, the crus of the stapes, the greater superficial petrosal nerve, and the anterior malleolar ligament were clearly visualized on ultra-high resolution CT. The stapedius muscle tendon and the chorda tympani exiting the posterior canaliculus and coursing medial to the malleus could be visualized.
Ultra-high resolution CT provides good visualization of small temporal bone structures in normal subjects.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Background
The aim of this study was to evaluate the efficacy of the procedure by analyzing the blood loss and duration of carotid body tumor (CBT) surgery following same‐day preoperative ...embolization.
Methods
We reviewed the medical records of subjects retrospectively. Fifteen patients with 16 CBTs were enrolled in this study. Our same‐day procedure comprises preoperative embolization of the feeding arteries in the morning followed by surgery within 3 hours after the embolization is completed.
Results
The mean operative time and the mean amount of blood loss were 138 minutes and 29.3 mL, respectively. The tumor volume after embolization was markedly reduced and the mean reduction rate was 50%. We found that 13 CBTs had more than three feeding arteries. Almost all the postoperative complications, mainly cranial nerve paralyzes, resolved within months after surgery.
Conclusion
Our same‐day procedure is a safer and superior alternative to traditional CBT surgery, having good outcomes.
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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
The purpose of this paper is to review typical and atypical imaging features of spondylolytic spondyolisthesis and natural courses. Imaging features of the typical pars defect in early phase include ...bone marrow edema of the isthmus on MR imaging with progression of bone defect on plain radiography or CT. There are various defect types (pedicular cleft, retroisthmic cleft) and locations (upper lumbar spine and unilateral lesions). Natural courses also vary, with different patterns of progression and stabilization. Clinical correlation of the imaging and clinical features is often difficult.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, VSZLJ, ZAGLJ
Objectives: The clinical impact of portal vein thrombosis (PVT) in cirrhotic patients remains unclear. The aim of the study is whether recanalization of acute PVT in nonmalignant cirrhotic patients ...is associated with their prognosis.
Materials and methods: We identified subject with PVT in cirrhotic patients from institutional database. Patients with ≥50% reduction in thrombus size were classified into the improved group and those with ≤49% reduction in thrombus size, or thrombus development in other branches were classified into the deteriorated group. We compared the cumulative survival rate, event-free survival rate (EFS), and liver function (albumin-to-bilirubin (ALBI) and model for end-stage liver disease XI (MELD-XI) between the two groups.
Results: Twenty-seven patients were enrolled in this retrospective study. Sixteen patients were classified into the improved group, and 11 were classified into the deteriorated group. In the improved group, the ALBI grade and MELD-XI measured before the onset of PVT and at one year after the onset of PVT were not significantly different. In contrast, MELD-XI was significantly aggravated in deteriorated group (MELD-XI p = .02). The cumulative survival of the two groups did not differ significantly; however, the EFS of the deteriorated group was significantly lower (p = .049).
Conclusions: Residual thrombosis of PVT in cirrhotic patients increased the incidence of liver-related events and was associated with the deterioration of the liver function.
It is very important to assess the artery of Adamkiewicz before repair of the thoracoabdominal or descending thoracic aorta. Several studies have demonstrated the feasibility and advantages of ...noninvasive assessment of the artery of Adamkiewicz with magnetic resonance (MR) angiography and multi-detector row computed tomographic (CT) angiography. Recent advances in MR angiography and CT angiography have led to changes in the detectability of this artery. In the present study, both MR angiography and CT angiography were performed without complications for preoperative evaluation of 30 patients who underwent repair of the thoracoabdominal or descending thoracic aorta. MR angiography provided detection rates as high as 93% and 80% with the morphologic "hairpin turn" criterion and the anatomic "continuity" criterion, respectively. Sixteen-detector row CT angiography provided detection rates as high as 83% and 60%, respectively. Use of both MR angiography and CT angiography provided higher detection rates of 97% and 90%, respectively. The collateral pathways were depicted in seven cases (23%). MR angiography is superior for depiction of the artery of Adamkiewicz, especially when it arises from the false lumen of a dissecting aneurysm. CT angiography has a wide field of view and allows depiction of significant collateral pathways associated with the internal thoracic artery and intercostal arteries.
Because of the globalization of environment around the academic society, the expected roles have changed significantly. In this short communication, we present the current situation in our ...international activities of the Japan Radiological Society, particularly in the academic activities and clinical practice. Establishing and reinforcing international network is one process of their promotion.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, VSZLJ, ZAGLJ
Normal findings of the manubriosternal joint vary and include narrowing, irregularity, and ankylosis. Proliferative changes are common during the degenerative process, and they include osteophyte ...formation and sclerosis. Ankylosis may be an end result. Imaging features of inflammatory arthritides are also generally nonspecific. Bone marrow and adjacent soft tissue change on magnetic resonance imaging with no radiographic findings is a relatively early change. Only erosion and fluffy adjacent bone resorption on plain radiography and computed tomography are specific features of active arthritis.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
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