Post-traumatic fibro-osseous lesions (PTFOL) are a rare and benign tumor that typically affects the ribs and is probably caused by an excessive post-traumatic reactive process. PTFOL primarily affects the sixth, seventh, and eighth ribs. Here, we report a case of a PTFOL with an unusual location and expansion that simulated a malignant chest tumor. A 28-year-old male patient with a history of minor chest trauma presented with pain. Chest radiography revealed a large, well-defined lesion on the left fourth rib, and computed tomography (CT) of the chest revealed a lytic lesion-type IC on the posterior and middle arches of the left fourth rib with a cartilaginous matrix and discontinued periosteal reaction without soft tissue mass extension. Additionally, magnetic resonance imaging of the chest revealed an ovoid, expansive mass with cystic lobules and lobulated contours extending almost over the entire left fourth rib, measuring 134×47 mm in size. This mass has a low signal on T1-weighted images and a heterogeneous intermediate signal on T2-weighted images, with intense enhancement after gadolinium injection suggestive of a malignant chest tumor. A CT-guided bone biopsy confirmed the presence of an intramedullary lesion consisting of fibrous connective tissue with fusiform fibroblastic cells without atypical signs. The lesion was delimited by bone trabeculae with nibbled edges, indicating exaggerated osteoclastic activity compatible with a diagnosis of PTFOL. The patient was treated with simple analgesics, and chest pain was relieved, with an unchanged volume of the lesion at 1 year of follow-up.
Background Knee osteoarthritis is highly prevalent, especially among the elderly. However, its risk factors have not been well identified, especially in the Korean population. This study aimed to assess the epidemiologic characteristics and risk factors of knee osteoarthritis in the Korean population.
Methods Data of 2,280 (1,295 women) participants of the 2013 Korea National Health and Nutrition Examination Survey aged ≥50 years who underwent knee radiography were analyzed. According to the American College of Rheumatology clinical/radiographic classification criteria, knee osteoarthritis was defined as knee pain and radiographic knee osteoarthritis. The association between risk factors and knee osteoarthritis was analyzed using the chi-square test and binominal logistic regression.
Results The participants had an average age of 62.6 years; 56.8% of them were women. The average body mass index was 24.2 kg/m2 , and 296 (13%) participants were diagnosed with knee osteoarthritis. After adjustment for multiple risk factors, age of ≥65 years (adjusted odds ratio [OR], 2.552; 95% confidence interval [CI], 1.868–3.486), female sex (OR, 2.050; 95% CI, 1.275–3.295), obesity (body mass index, ≥25.0 kg/m2 ; OR, 1.563; 95% CI, 1.191–2.051), hypertension (OR, 1.394; 95% CI, 1.052–1.846), low educational level (lower than or equal to elementary school: OR, 4.761; 95% CI, 2.131–10.635; middle school: OR, 3.184; 95% CI, 1.375–7.369), and low strength exercise frequency (<2 times/wk; OR, 1.829; 95% CI, 1.202–2.784) increased the risk of knee osteoarthritis.
Conclusion Old age, sex, obesity, hypertension, low educational level, and low strength exercise frequency were found to be risk factors for knee osteoarthritis.
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Background Both aortic knob width and metabolic syndrome are suggested to be related to atherosclerosis and cardiovascular diseases. However, the association between aortic knob width and metabolic syndrome is unknown. This study aimed to explore this relationship.
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Results Aortic knob width was significantly correlated with age; body mass index; waist circumference; systolic and diastolic blood pressures; total cholesterol, triglyceride, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, fasting glucose, glycated hemoglobin, insulin, and uric acid levels; and homeostatic model assessment of insulin resistance values. Aortic knob width significantly increased as the number of metabolic syndrome components increased. Moreover, metabolic syndrome component values tended to increase across the quartile groups of aortic knob width after adjusting for age, exercise, smoking status, and alcohol use. Through receiver operating characteristic curve analysis, we determined the clinically useful cutoff value for aortic knob width to be 30.47 mm in premenopausal women.
Conclusion Aortic knob width was found to be significantly related to metabolic syndrome and its individual components.
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Background : Despite the declining tendency of the prevalence of tuberculosis in Korea, pulmonary tuberculosis is still considered to be such an important disease in Korea that tuberculosis of patients have been screened by mass miniature radiography(MMR). Although the prevalence of tuberculosis increases with age, screening of it has been done on students and young workers. There hasn't been any study about the prevalence of tuberculosis in adolescents recently.
Methods : MMR were performed on high school freshmen in Seoul from March to September, 1995. Patients with abnormal MMR were further evaluated on history taking and standard chest X-ray, Their results were classified as normal, active tuberculosis, activity-undetermined tuberculosis, healed tuberculosis, and other diseases. The prevalence of active tuberculosis by this screening method was estimated.
Results : Among 194,102 high school freshmen, 388 were suspected to have pulmonary tuberculosis by MMR. The prevalence of tuberculosis in high school freshmen in Seoul was 0.20%, male 0.18%, female 0.23% by MMR respectively, There was significant difference between the prevalences of both sexes. History taking and standard X-ray was taken for 94 students and among them 68 students were found to have active tuberculosis(72.3%), 14 normal(14.9%), 3 other diseases(3.2%), 9 healed or activity-undetermined tuberculosis(9.6%). Newly-diagnosed patients in active tuberculosis were 59(82.9%). There were family history in 31 out of 94 students(33.0%) and 29 out of 68 students(37.1%) with active pulmonary tuberculosis had family history of tuberculosis.
Conclusion : The prevalence of pulmonary tuberculosis in high school freshmen in Seoul was 0.20% by MMR. Positive predictive value of MMR was 72.3% in follow-up students by standard chest X-ray. Therefore estimated prevalence of active pulmonary tuberculosis by standard chest X-ray after MMR was 0.14%.
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