Corpus callosum area and sectioning: a radioanatomical study correlated with MRI and cadaver morphometry.

PURPOSE: The corpus callosum (CC) is the primary interhemispheric connection between the two cerebral hemispheres. Besides their similar morphological characters, there are differences in their measurements. This study aimed to divide the CC into groups using planes based on the anterior commissure (AC) and posterior commissure (PC) and to detect differences in CC magnetic resonance imaging (MRI) and cadaver samples between these groups. METHODS: The study included 80 patients (40 male and 40 female patients) who underwent normal MRI in the midsagittal plane, and 38 cerebral hemispheres from 40 adult cadaver brains, with each hemisected in the midsagittal plane. The medial surface of the CC was divided vertically into three parts (the anterior, middle, and posterior zones) according to the AC and PC. Areas and parameters were measured in both the cadaveric hemispheres and patient MRI images. RESULTS: The total CC area and CC areas between, anterior, and posterior to the AC-PC vertical lines were the same in both the MRI and cadaver samples. In addition, morphometric measurements like the CC length, AC-PC length, and CC height at the AC and PC vertical lines, and their correlations were also found to be similar between the MRI and cadaver samples. CONCLUSION: This study proposes three areas according to AC and PC classification (anterior, middle, and posterior). This new proposed classification is suitable for stereotactic interventions and is useful for obtaining data from MRI images. However, it should be kept in mind that there may be changes and variations.

Evaluation of the level of problem solving skills of Turkish higher education graduates in technology-rich environments.

This study aims to evaluate the level of Turkish higher education graduates' problem-solving skills (PSSs) in technology-rich environments (TREs) at work and daily life as information and communication technologies are increasingly used in economic and social structure. It also investigates the effects of socio-demographic factors including gender, age, the field of study, and higher education attainment level on their PSSs in TREs. In this context, the data concerning Turkish higher education graduates' PSSs released by the Programme for the International Assessment of Adult Competencies (PIAAC) in 2016 was used. With regard to methodology, we employed descriptive and logistic regression analyses to investigate the data. The descriptive statistics results indicated that the participants use computer at a basic level in TREs and work in small and medium enterprises where technology is not highly demanded at moderate and advanced levels. The logistic regression analysis results revealed that gender and higher education level have significant impacts on their level of PSSs in TREs as opposed to age and the field of study variables. The significant differences are in favor of the female participants and associate and bachelor degree levels. These findings accounted for nearly 4% of their level of problem solving skills. Based on the study findings and the changing expectations of labor market, the policy proposals were discussed to increase the level of Turkish higher education students' PSSs in TREs. The study can contribute to the literature, thereby assisting the development of new practices or policies in Turkey to advance higher education graduates' PSSs in order to meet the needs of TREs at both work and in daily life.

Use of the COVID-19 Reporting and Data System (CO-RADS) classification and chest computed tomography involvement score (CT-IS) in COVID-19 pneumonia.

PURPOSE: The increasing tendency of chest CT usage throughout the COVID-19 epidemic requires new tools and a systematic scheme for diagnosing and assessing the lung involvement in Coronavirus Disease 2019 (COVID-19). To investigate the use of the COVID-19 Reporting and Data System (CO-RADS) classification and chest CT Involvement Score (CT-IS) in COVID-19 pneumonia. MATERIAL AND METHODS: This retrospective study enrolled 280 hospitalized patients diagnosed with COVID-19 pneumonia in a tertiary hospital in Turkey. All patients underwent non-contrast CT chest imaging. Two radiologists interpreted all CT images according to CO-RADS classification without knowing the clinical features, laboratory findings. We used CT involvement score (CT-IS) for assessing chest CT images of COVID-19 patients. Also, we examined the relationship between CT-IS and clinical outcomes in COVID-19 patients. RESULTS: Of the patients, 111(39.6%) had positive real-time reverse transcriptase-polymerase chain reaction (RT-PCR) results. CO-RADS 5 group patients had statistically significant positive RT-PCR results than the other groups (P < 0.001). All of the CO-RADS 2 group patients (30) had negative RT-PCR results. The mean total CT-IS in CO-RADS 2 group was 3.4 ± 2.8. The mean total CT-IS in CO-RADS 5 group was 8.2 ± 4.7. Total CT-IS was statistically significantly different among CO-RADS groups (P < 0.001). The mean total CT-IS was statistically significantly different between survivors and patients died of COVID-19 pneumonia (P < 0.001). CONCLUSIONS: CO-RADS is useful in detecting COVID-19 disease, even if RT-PCR testing is negative. CT-IS is also helpful as an imaging tool for evaluation of the severity and extent of COVID-19 pneumonia.

Investigation of the arterial intima-media thickness in Behcet's disease patients without vascular complaints.

Objectives Behcet's disease is a multisystemic, inflammatory disease. Various factors have been implicated in the disease, including genetics, infections, immunoglobulins, immune complexes, antibodies, and oxidative stress. However, the underlying etiopathogenesis remains unclear. Behcet's disease can occur with or without vascular involvement. This prospective study investigated the relationship between the intima-media thickness of the major arteries, in addition to other factors affecting the disease process, in Behcet's disease without vascular involvement. Methods Twenty-four patients (average age: 38.50 ± 10.931) without vascular involvement or any vascular complaints who were diagnosed with Behcet's disease were included in the study. Sixteen healthy subjects (average age: 39.75 ± 7.793) were included as a control group. Demographic information and medical histories were recorded, and routine blood tests were performed in both groups. The intima-media thickness of the subclavian, axillary, femoral, and carotid arteries of all the participants were recorded using Doppler ultrasonography. The data were then subjected to intergroup statistical and correlation analyses. Results There were no significant differences between the arterial intima-media thickness values of the Behcet's disease patients and those of the control group ( p > 0.05). However, there was a significant difference between the neutrophil-lymphocyte ratio ( p = 0.004), low-density lipoprotein ( p = 0.007), and triglyceride ( p = 0042) levels of the two groups. Significant correlations were found between intima-media thickness and neutrophil-lymphocyte ratio levels ( p = 0.012) and the disease duration ( p = 0.030). There was also a significant correlation between the intima-media thickness of the femoral artery and disease duration ( p = 0.014). Conclusions The results showed that the duration of illness had a significant effect on arterial intima-media thickness in Behcet's disease. Blood neutrophil-lymphocyte ratio levels were also associated with increased intima-media thickness.

Is sarcopenia really a risk factor in the development of postoperative complications?

PURPOSE: This study was aimed to evaluate the impact of sarcopenia, which was defined by total psoas area (TPA) and total psoas volume (TPV) measurements, on the development of major postoperative complications. MATERIAL-METHODS: Sarcopenia was assessed in 225 patients with gastrointestinal cancer who underwent surgery between October 2015 and March 2020. The impact of sarcopenia defined by TPA and TPV on major postoperative complications was assessed using multivariate analysis. RESULTS: Both the median TPA and TPV were higher in men than that in women (p < 0.001). The cut-off value of TPA to define sarcopenia was 526.5 mm2/m2 and 495.68 mm2/m2 for men and women, respectively, and the cut-off value of TPV was 79.6 cm3/m2 for men and 83.1 cm3/m2 for women, While 102 patients (45.3%) had sarcopenia defined by TPA, 54 (24%) had sarcopenia defined by TPV. Seventy-eight patients had at least one complication; 36 (46%) had major complications, and 15 patients died during the study. In logistic regression analysis, only sex was found as a risk factor for the development of sarcopenia (OR = 13.403, p = 0.014). There was a positive correlation between TPA and TPV in male and female patients separately (r = 0.841 and r = 0.883, respectively, p < 0.001). Only sarcopenia defined by TPV was found as a risk factor for the development of major postoperative complication (OR: 35.349, p = 0.028). CONCLUSION: Sarcopenia defined by TPV is an independent risk factor in predicting major postoperative complications, not TPA. We believe that volume measurement instead of area is a more accurate method for evaluating sarcopenia in gastrointestinal cancer surgery.

The Diagnostic Value of the American College of Radiology Thyroid Imaging Reporting and Data System Classification and Shear-Wave Elastography for the Differentiation of Thyroid Nodules.

This study aimed to determine the diagnostic accuracy of the American College of Radiology Thyroid Imaging Reporting and Data System (ACR TI-RADS) classification and shear-wave elastography (SWE) for the diagnosis of benign and malignant thyroid nodules. This retrospective study enrolled 141 patients (18-84 y of age) undergoing thyroidectomy between January 2015 and August 2020. All statistical analysis was based on pathologic results of patients. The cut-off value was found as category 4 for ACR TI-RADS classification and 5 m/s for shear-wave velocity (Vs) by the receiver operator characteristic curve analysis (area under the curve [AUC] = 0.684, p = 0.020 and AUC = 0.715, p = 0.005, respectively). SWE has higher diagnostic accuracy than the ACR TI-RADS classification system and can improve thyroid nodule discrimination in all sizes of the nodules. Also, the diagnostic performance decreases when the nodule diameter increases.

Cystic Hygroma with Multiple Benign Bone Lymphangiomas in an Adult Patient: A Rare Entity in the Differential Diagnosis of Multiple Osseous Lesions in Oncology Practice.

Cystic lymphangioma presenting with multiple bone lesions in an adult patient is a rare occurrence, with a limited number of reported cases in the literature. In this case report, we describe a 32-year old female patient with chronic neck and pelvic pain, and multiple lytic bone lesions on radiological imaging, which were eventually discovered to originate from cystic hygroma and widespread bone lymphangiomas that were present for more than 10 years. It should be kept in mind that there may be multiple benign causes of differential diagnosis in patients presenting with findings suggestive of diffuse bone metastasis. Misdiagnosis may cause the patient to receive unnecessary treatments, especially radiotherapy. In this case, we reached the diagnosis of benign disease, diffuse bone lymphangiomatosis. For this purpose, we also examine the long and stable medical history of the patient with the findings of BT, ultrasound, and bone scintigraphy. We think that as long as there are no stable and serious results ofclinical and radiological findings of the patient, the patient should be approached with medical follow-up without treatment.

Unilateral common carotid artery dissection in a patient with recent COVID-19: An association or a coincidence?

The "Corona Virus Disease 2019 (COVID-19)", caused by severe acute respiratory coronavirus 2 (SARS-CoV-2), progressed rapidly since its first outbreak, and quickly developed into a pandemic. Although COVID-19 mostly presents with respiratory symptoms, researchers have started reporting neurologic manifestations such as cerebrovascular diseases in patients, with COVID-19 as the pandemic has progressed. Herein, we report a case of 38-year-old female patient identified with a left common carotid artery dissection, with COVID-19. Clinicians must keep in mind that COVID-19 can cause vascular complications such as carotid artery dissections in the ensuing period, even after the acute phase, although there is currently a lack of sufficient evidence to identify any causal association between COVID-19 and arterial dissections.

Evaluation of the multi-slice computed tomography outcomes in diaphragmatic injuries related to penetrating and blunt trauma.

PURPOSE: Traumatic diaphragmatic rupture is a diagnostic challenge for both surgeons and radiologists and generally occurs secondary to blunt and penetrating trauma of thoracoabdominal region. MATERIAL AND METHODS: 56 patients who underwent surgical procedure due to blunt or penetrating trauma were included to the study. RESULTS: There were 37 diaphragmatic ruptures in the left side and 19 patients in the right side. The most common radiological finding was "the direct monitoring of defect" (54,3%). CONCLUSION: Findings suggestive of diaphragmatic rupture must be carefully evaluated in patients with blunt or penetrating thoracoabdominal trauma.