Background: We hypothesized that polymicrobial posttraumatic osteomyelitis (PTO) may be associated with worse outcomes when compared to monomicrobial PTO. We therefore attempted to show the outcomes and predisposing factors associated with polymicrobial PTO.Methods: A single-center case-control study was carried out from 2007 to 2012. The outcome variables analyzed were: the need for additional surgical and antibiotic treatments, rates of amputation, and mortality associated with the infection. Univariate and multivariable analyses using multiple logistic regression were performed to identify risk factors associated with polymicrobial PTO, and p < 0.05 was considered significant.Results: Among the 193 patients identified, polymicrobial PTO was diagnosed in 37.8%, and was significantly associated with supplementary surgical debridement (56.1% vs. 31%; p < 0.01), a higher consumption of antibiotics, and more amputations (6.5% vs 1.3%; p < 0.01). Factors associated with polymicrobial PTO in the multivariable analysis were older age (odds ratio [OR] = 1.02, 95% confidence interval [CI] = 1.01 to 1.03, p = 0.04), working in agriculture (OR = 2.86, 95% CI = 1.05 to 7.79, p = 0.04), open fracture Gustilo type III (OR = 2.38, 95% CI = 1.02 to 5.56, p = 0.04), need for blood transfusion (OR = 2.15, 95% CI = 1.07 to 4.32, p = 0.03), and need for supplementary debridement (OR = 2.58, 95% CI = 1.29 to 5.16, p = 0.01).Conclusions: PTO is polymicrobial in more than one-third of patients, associated with extra surgical and clinical treatment, and worse outcomes including higher rates of amputation.

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Chronic recurrent multifocal osteomyelitis is an idiopathic nonpyogenic autoinflammatory bone disorder involving multiple sites, with clinical progression persisting for more than 6 months and which may have episodes of remission and exacerbation in the long term. It represents up to 2-5% of the cases of osteomyelitis, with an approximate incidence of up to 4/1,000,000 individuals, and average age of disease onset estimated between 8-11 years, predominantly in females. The legs are the most affected, with a predilection for metaphyseal regions along the growth plate. We describe the case of a female patient, aged 2 years and 5 months, with involvement of the left ulna, right jaw and left tibia, showing a predominance of periosteal reaction as main finding.Keywords: osteomyelitis, chronic, multifocal, recurrent, periosteal.case report A female patient aged 2 years and 5 months, being investigated due to pain and swelling in the left forearm for one month. Her parents denied episodes of fever, trauma, and other comorbidities. On physical examination, the child presented normal weight, normal skin color, she was well-hydrated, acyanotic, breathing normally and in good general conditions. Blood counts analyzed in the previous month revealed mild leukocytosis and normocytic normochromic anemia. Levels of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) were slightly elevated.Computed tomography (CT) of the left forearm without intravenous contrast revealed a periosteal reaction and a small area of loss of cortical compaction, especially in the ulna ( Figure 1A).A biopsy of the left ulna was performed with results describing signs suggestive of chronic osteomyelitis. Culture of the biopsy material did not show growth of microorganisms.Empirical antibiotic therapy was used starting one month after diagnosis, but there was no change in clinical status. A new biopsy was performed in the third month, showing the same findings associated with negative blood culture. Radiographs of the left forearm from the second to the fifth month showed progression of the multilamellar periosteal reaction to a solid type ( Figure 1B).Chest radiography, echocardiography, levels of TSH, T4, IgG, IgA, IgM and complement components were all normal. A hypothesis of chronic recurrent multifocal osteomyelitis (CRMO) was suggested and thus treated with ibuprofen combined with methotrexate, later replaced with sulfasalazine.Between the eighth and ninth month, pain and swelling appeared in the right mandibular region and in the left leg. A facial CT scan showed mainly periosteal reaction at the right mandibular angle with mild bone sclerosis (Figure 2). CT scan of the left leg also characterized a periosteal reaction in the tibial diaphysis with a small area of cortical alteration (Figure 3), similar to that found in the ulna.After 6 months of therapy, there was clinical and general laboratory improvement, with left forearm radiography in the 11 th month showing a regression of the periosteal reaction, despite persistence of corti...

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We describe the case of a male patient, aged 76 years, referred for cardiac investigation due to retrosternal chest pain and dyspnea. He had a history of acute myocardial infarction and angioplasties in the last 30 years, including a saphenous vein coronary artery bypass grafting (SVCABG). Echocardiogram showed hypoechoic oval formation near the right ventricle, suggesting a pericardial cyst. Computed angiotomography revealed a predominantly fusiform and thrombosed aneurysmal dilation of the SVCABG to the right coronary artery. SVCABG aneurysms are very rare and potentially fatal. They usually appear in the late postoperative period, and patients are often asymptomatic. On radiography, it is frequently presented as enlargement of the mediastinum, with echocardiography, computed tomography and magnetic resonance imaging being very useful for diagnosis. Coronary angiography is the gold standard to detect these cases. Our report illustrates a rare situation arising late from a relatively common surgery. Due to its severity, proper recognition in the routine assessment of patients with a similar history is essential.Keywords: aneurysm, bypass, coronary, saphenous, myocardium. case reportMale patient, 76 years old, underwent complementary investigation through imaging examinations due to complaints of retrosternal chest pain and mild dyspnea several months ago. The patient reported hospitalization and clinical treatment of acute myocardial infarction one month before. The patient had hypertension, dyslipidemia, was a former smoker and had a history of two other acute myocardial infarctions prior to 2010. The patient's history included saphenous vein coronary artery bypass grafting (SVCABG) for about 30 years, two percutaneous transluminal coronary angioplasty procedures, one with stenting to clear the SVCABG, and surgical repair of abdominal aortic aneurysm with endoprosthesis for approximately 4 years. Reports of catheterizations prior to 2015 described new SVCABG occlusion.A chest radiograph showed only a metallic sternal suture and a small stent near the cardiac silhouette ( Figure 1A and B).The echocardiogram showed a hypoechoic, elongated oval image, adjacent to the right cardiac chambers, causing a slight extrinsic compression on diastole ( Figure 2A and B), apparently without flow according to color Doppler investigation. The diagnostic possibility of pericardial cyst was raised.Computed tomography of the thorax showed a large, oval and elongated hypoattenuating (approximately 45 HU) mediastinal mass with lobulated contours, located in close contact with the right heart chambers, presenting peripheral parietal calcifications with a maximum caliper of 4.9 cm and measuring approximately 10.0 cm in length ( Figure 3A-C), not enhanced after the injection of intravenous contrast medium ( Figure 3D-F). The mass could be seen from the emergence of the ascending aorta, with the small stent evident in its interior, extending even to the lower cardiac wall. Such findings were compatible with thrombosed SVCABG aneurysm...