A 50-year-old male underwent a checkup for an insurance company. Chest X-ray revealed a large ball-like lesion in the posterior mediastinum. The finding was confirmed by computed tomography (CT) scan (Figure 1). The patient was referred to our center, where he had a successful mass removal surgery (Figure 2). Pathology identified the mass as neurinoma. A B Figure 1. Chest X-ray (A) and computed...

BACKGROUND The use of computed tomographic (CT) scans in the United States (US) has increased more than 3-fold since 1993 to approximately 70 million scans annually. Despite the great medical benefits, there is concern about the potential radiation-related cancer risk. We conducted detailed estimates of the future cancer risks from current CT scan use in the US according to age, sex, and scan t...

BACKGROUND Congenital anomalies of the coronary arteries (CAs) are rare and are often diagnosed incidentally during a conventional coronary angiography. Recently, the incidence of these congenital defects is on the rise particularly after the introduction of the electrocardiography (ECG) gated coronary computed tomographic angiography (CCTA). This innovative radiological screening modality has ...

Torsion of the gallbladder is a rare entity that is difficult to diagnose preoperatively. The condition occurs most often in the elderly. Although its etiology is unknown, a constant finding is the presence of the gallbladder on a mobile mesentery (floating gallbladder). Torsion, or volvulus, of the gallbladder occurs when it twists axially, with the subsequent occlusion of bile and/or blood fl...

INTRODUCTION Thrombosis in myeloproliferative thrombocytosis occurs usually in the microvessels and medium-sized arteries and veins and only rarely in the aorta. Aortic thrombosis is usually treated with thrombectomy. Reported here is a rare case that was treated pharmacologically. CASE PRESENTATION A 60-year-old Japanese woman presented with numbness of both lower extremities. Her platelet c...

FIGURE 1. A, Three-dimensional reconstructed computed tomographic scan fabric graft was used, and both proximal and distal anastomoses were covere was inserted into the distal anastomosis, extending 10 cm down to the descen (red arrow). B, Axial computed tomographic scan shows air entrapment along th From the Department of Cardiovascular Surgery, KKR Sapporo Medical Center, and the Division of ...

OBJECTIVE To develop a computer-enabled paradigm for assessment of bony nasal pyramid dimensions. DESIGN Retrospective review of archived computed tomographic data. SETTING Tertiary level academic center. PATIENTS Patients who had undergone computed tomographic scans for computer-aided transsphenoidal hypophysectomy were included. Previous nasal surgery, inflammatory sinus disease, and do...

We report a case of spontaneous intracranial hypotension with classic symptoms of orthostatic headache and acute presentation of subdural haematoma on computed tomographic scan. Conventional approach with conservative treatment was initially adopted. The patient's condition, however, deteriorated after 2 weeks, requiring surgical evacuation of the intracranial haemorrhage. We reviewed the clini...

INTRODUCTION Though computed tomographic angiography has very high sensitivity and specificity to diagnose acute aortic dissection, false-negative studies can occur and secondary tests may be required to make the diagnosis. CASE PRESENTATION We report the case of a 57-year-old Caucasian man with a typical presentation for acute type A aortic dissection in whom the initial non-cardiac gated co...