Adventitial cystic disease of the popliteal artery is a rare disorder that causes localized stenosis or occlusion by compression of the vessel lumen. The disease produces lower extremity claudication, typically in young and middle-aged men. We report a case of the adventitial cystic disease of the popliteal artery in a 55-year-old man with symptom of left calf claudication. Diagnosis was done by ultrasound, angiography, and magnetic resonance imaging. The patient was treated with resection of the diseased popliteal artery followed by interposition of saphenous vein graft. Postoperatively, the symptom and sign resolved completely.
Angiography ; Constriction, Pathologic ; Diagnosis ; Humans ; Lower Extremity ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Popliteal Artery* ; Saphenous Vein ; Transplants ; Ultrasonography

PURPOSE: To compare lumbar disc changes between initial lumbar spine (L-spine) MRI and follow-up (f/u) MRI that were performed due to recurred backaches. MATERIALS AND METHODS: A total 50 patients who had undergone f/u L-spine MRI were retrospectively reviewed. Five discs (L1-S1) were surveyed in each f/u MRI. Lumbar disc changes were defined as no change, aggravations, or improvements compared to initial disc states. These states were defined on the basis of morphologic status and disc levels. RESULTS: In a total of 250 discs in 50 patients, 31 discs (12.4%) showed morphologic changes of disc lesions, whereas 219 discs (87.6 %) showed no changes. Among the 31 disc lesions, 24 were aggravated and 7 were partially improved. And on the basis of disc status, initially abnormal discs revealed any morphologic changes of the degree of disc herniation. A total of 33.3% of the morphologic changes are noted in initially extruded discs. Fifteen morphologic changes of disc lesions were located at the L4-5 level. CONCLUSION: Our results suggest that correlations between lumbar disc herniations and back pain symptoms are limited, and that evaluations of extra disc lesions are required.
Back Pain ; Follow-Up Studies ; Humans ; Intervertebral Disc ; Low Back Pain ; Natural History ; Retrospective Studies ; Spine

Purpose: To assess and compare the diagnostic efficacies of magnetic resonance arthrography (MRA) and computed tomography arthrography (CTA) in identifying labral and chondral lesions within the hip joints. To analyze the diagnostic confidence levels of radiologists when interpreting images obtained from MRA and CTA. Materials and Methods: Labral and chondral lesions in 100 hips of 95 patients on 3.0 tesla MRA, CTA (128- and 160-slice multi-detector computed tomography), and arthroscopic findings were retrospectively reviewed by three radiologists. We analyzed the sensitivity, specificity, accuracy, positive predictive value, and area under the curve (AUC) using receiver operating characteristic curves. The diagnostic confidence of the radiologists was also assessed during image interpretation. Results: Both MRA and CTA showed good diagnostic performances in the assessment of labral and chondral lesions. MRA showed higher sensitivity and accuracy, with a higher AUC for labral lesions than CTA (MRA/CTA: 97.3%/84.8% [p < 0.001], 93.8%/89.8%, and 0.945/0.896 [p = 0.003], respectively). CTA outperformed MRA in diagnostic performance in terms of sensitivity, specificity, accuracy, and AUC in acetabular cartilage lesions (MRA/ CTA: 75.8%/93.9% [p = 0.020], 67.6%/88.2% [p < 0.001], 73.0%/92.0% and 0.717/0.911 [p < 0.001], respectively) and sensitivity, accuracy and AUC in femoral cartilage lesions (60.5%/78.9% [p = 0.020], 80.0%/87.0%, and 0.762/0.854 [p = 0.018], respectively). The diagnostic confidence was higher with MRA for labral lesions (p = 0.002) and with CTA for chondral lesions (p < 0.001). Conclusion Both MRA and CTA showed strong diagnostic abilities for hip joint lesions, with MRA being better for labral lesions and CTA for chondral lesions. Radiologists showed greater confidence in diagnosing labral lesions using MRA and chondral lesions using CTA.

Purpose: To assess and compare the diagnostic efficacies of magnetic resonance arthrography (MRA) and computed tomography arthrography (CTA) in identifying labral and chondral lesions within the hip joints. To analyze the diagnostic confidence levels of radiologists when interpreting images obtained from MRA and CTA. Materials and Methods: Labral and chondral lesions in 100 hips of 95 patients on 3.0 tesla MRA, CTA (128- and 160-slice multi-detector computed tomography), and arthroscopic findings were retrospectively reviewed by three radiologists. We analyzed the sensitivity, specificity, accuracy, positive predictive value, and area under the curve (AUC) using receiver operating characteristic curves. The diagnostic confidence of the radiologists was also assessed during image interpretation. Results: Both MRA and CTA showed good diagnostic performances in the assessment of labral and chondral lesions. MRA showed higher sensitivity and accuracy, with a higher AUC for labral lesions than CTA (MRA/CTA: 97.3%/84.8% [p < 0.001], 93.8%/89.8%, and 0.945/0.896 [p = 0.003], respectively). CTA outperformed MRA in diagnostic performance in terms of sensitivity, specificity, accuracy, and AUC in acetabular cartilage lesions (MRA/ CTA: 75.8%/93.9% [p = 0.020], 67.6%/88.2% [p < 0.001], 73.0%/92.0% and 0.717/0.911 [p < 0.001], respectively) and sensitivity, accuracy and AUC in femoral cartilage lesions (60.5%/78.9% [p = 0.020], 80.0%/87.0%, and 0.762/0.854 [p = 0.018], respectively). The diagnostic confidence was higher with MRA for labral lesions (p = 0.002) and with CTA for chondral lesions (p < 0.001). Conclusion Both MRA and CTA showed strong diagnostic abilities for hip joint lesions, with MRA being better for labral lesions and CTA for chondral lesions. Radiologists showed greater confidence in diagnosing labral lesions using MRA and chondral lesions using CTA.

Purpose: To assess and compare the diagnostic efficacies of magnetic resonance arthrography (MRA) and computed tomography arthrography (CTA) in identifying labral and chondral lesions within the hip joints. To analyze the diagnostic confidence levels of radiologists when interpreting images obtained from MRA and CTA. Materials and Methods: Labral and chondral lesions in 100 hips of 95 patients on 3.0 tesla MRA, CTA (128- and 160-slice multi-detector computed tomography), and arthroscopic findings were retrospectively reviewed by three radiologists. We analyzed the sensitivity, specificity, accuracy, positive predictive value, and area under the curve (AUC) using receiver operating characteristic curves. The diagnostic confidence of the radiologists was also assessed during image interpretation. Results: Both MRA and CTA showed good diagnostic performances in the assessment of labral and chondral lesions. MRA showed higher sensitivity and accuracy, with a higher AUC for labral lesions than CTA (MRA/CTA: 97.3%/84.8% [p < 0.001], 93.8%/89.8%, and 0.945/0.896 [p = 0.003], respectively). CTA outperformed MRA in diagnostic performance in terms of sensitivity, specificity, accuracy, and AUC in acetabular cartilage lesions (MRA/ CTA: 75.8%/93.9% [p = 0.020], 67.6%/88.2% [p < 0.001], 73.0%/92.0% and 0.717/0.911 [p < 0.001], respectively) and sensitivity, accuracy and AUC in femoral cartilage lesions (60.5%/78.9% [p = 0.020], 80.0%/87.0%, and 0.762/0.854 [p = 0.018], respectively). The diagnostic confidence was higher with MRA for labral lesions (p = 0.002) and with CTA for chondral lesions (p < 0.001). Conclusion Both MRA and CTA showed strong diagnostic abilities for hip joint lesions, with MRA being better for labral lesions and CTA for chondral lesions. Radiologists showed greater confidence in diagnosing labral lesions using MRA and chondral lesions using CTA.

Purpose: To assess and compare the diagnostic efficacies of magnetic resonance arthrography (MRA) and computed tomography arthrography (CTA) in identifying labral and chondral lesions within the hip joints. To analyze the diagnostic confidence levels of radiologists when interpreting images obtained from MRA and CTA. Materials and Methods: Labral and chondral lesions in 100 hips of 95 patients on 3.0 tesla MRA, CTA (128- and 160-slice multi-detector computed tomography), and arthroscopic findings were retrospectively reviewed by three radiologists. We analyzed the sensitivity, specificity, accuracy, positive predictive value, and area under the curve (AUC) using receiver operating characteristic curves. The diagnostic confidence of the radiologists was also assessed during image interpretation. Results: Both MRA and CTA showed good diagnostic performances in the assessment of labral and chondral lesions. MRA showed higher sensitivity and accuracy, with a higher AUC for labral lesions than CTA (MRA/CTA: 97.3%/84.8% [p < 0.001], 93.8%/89.8%, and 0.945/0.896 [p = 0.003], respectively). CTA outperformed MRA in diagnostic performance in terms of sensitivity, specificity, accuracy, and AUC in acetabular cartilage lesions (MRA/ CTA: 75.8%/93.9% [p = 0.020], 67.6%/88.2% [p < 0.001], 73.0%/92.0% and 0.717/0.911 [p < 0.001], respectively) and sensitivity, accuracy and AUC in femoral cartilage lesions (60.5%/78.9% [p = 0.020], 80.0%/87.0%, and 0.762/0.854 [p = 0.018], respectively). The diagnostic confidence was higher with MRA for labral lesions (p = 0.002) and with CTA for chondral lesions (p < 0.001). Conclusion Both MRA and CTA showed strong diagnostic abilities for hip joint lesions, with MRA being better for labral lesions and CTA for chondral lesions. Radiologists showed greater confidence in diagnosing labral lesions using MRA and chondral lesions using CTA.

Diabetes mellitus (DM) can accompany many musculoskeletal (MSK) diseases. It is difficult to distinguish the DM-related MSK diseases based on clinical symptoms alone. Sonography is frequently used as a first imaging study for these MSK symptoms and is helpful to differentiate the various DM-related MSK diseases. This pictorial essay focuses on sonographic findings of various MSK diseases that can occur in diabetic patients.
Adult ; Cellulitis/ultrasonography ; Diabetes Mellitus, Type 2/*complications ; Diabetic Neuropathies/ultrasonography ; Female ; Humans ; Male ; Musculoskeletal Diseases/complications/*diagnosis/ultrasonography ; Pyomyositis/microbiology/ultrasonography ; Tenosynovitis/microbiology/ultrasonography ; Vascular Diseases/ultrasonography

Tumor-mimicking lesions in the musculoskeletal system can be defined as lesions mistaken as tumors due to the presence of palpation upon physical examination or a tumor-like appearance upon radiological examination. Moreover, tumor-mimicking lesions show diverse etiologies and anatomic locations. We illustrated the various tumor-mimicking lesions involving bone and soft tissue. In this review, the tumor-mimicking lesions were classified into those based on clinical examination and those based on radiological examination in musculoskeletal radiology. Awareness of the various causes of tumor-mimicking lesions, correctly obtaining clinical information, and the proper selection of imaging modality are important for the differentiation of tumor-mimicking lesions from true neoplasms.
Bone Neoplasms/diagnosis ; Diagnosis, Differential ; *Diagnostic Imaging ; Humans ; Muscle Neoplasms/diagnosis ; Musculoskeletal Diseases/*diagnosis ; Physical Examination ; Soft Tissue Neoplasms/diagnosis

OBJECTIVE: To evaluate whether an early bone marrow edema pattern predicts vertebral deformity types and prognosis in osteoporotic vertebral compression fracture (OVCF). METHODS: This retrospective study enrolled 64 patients with 75 acute OVCFs who underwent early MRI and followed up MRI. On early MRI, the low SI pattern of OVCF on T1WI were assessed and classified into 3 types (diffuse, globular or patchy, band-like). On followed up MRI, the vertebral deformity types (anterior wedge, biconcave, crush), degree of vertebral body height loss, incidence of vertebral osteonecrosis and spinal stenosis were assessed for each vertebral fracture types. RESULTS: According to the early bone marrow edema pattern on T1WI, 26 vertebrae were type 1, 14 vertebrae were type 2 and 35 vertebrae were type 3. On followed up MRI, the crush-type vertebral deformity was most frequent among the type 1 OVCFs, the biconcave-type vertebral deformity was most frequent among the type 2 OVCFs and the anterior wedge-type vertebral deformity was most frequent among the type 3 OVCFs (p<0.001). In addition, type 1 early bone marrow edema pattern of OVCF on T1WI were associated with higher incidence of severe degree vertebral body height loss, vertebral osteonecrosis and spinal stenosis on the follow up MRI. CONCLUSION: Early bone marrow edema pattern of OVCF on T1WI, significant correlated with vertebral deformity types on the follow up MRI. The severe degree of vertebral height loss, vertebral osteonecrosis, and spinal stenosis were more frequent in patients with diffuse low SI pattern.
Body Height ; Bone Marrow* ; Congenital Abnormalities* ; Edema* ; Follow-Up Studies ; Fractures, Compression* ; Humans ; Incidence ; Magnetic Resonance Imaging ; Osteonecrosis ; Osteoporosis ; Prognosis* ; Retrospective Studies ; Spinal Stenosis ; Spine

Fat tissue is a unique component of the soft tissue, and this fat tissue lies primarily in the spaces beneath the normal subcutaneous tissue, and within or around the organs. An entire lesion, or just a part of it, can be composed of these fat tissues. Therefore, it plays an important role in the diagnostic workup of suspected musculoskeletal diseases as well as in the differentiation between them. Fat tissue is shown as low density on plain radiographs, decreased attenuation on CT images, high signal intensity on T1-weighted images and it is hypoechoic on sonography. Because of its distinctive features, fat tissue is easy to verify on various modalities.?In addition, recent image studies like fat-suppressed imaging and STIR imaging provide more precise information of the lesion that involve fat tissue. In this article, we have reviewed the differentiation of musculoskeletal diseases, including the various tumorous lesion and tumor-like lesions involving the fat tissue.
Diagnosis* ; Musculoskeletal Diseases ; Subcutaneous Tissue