Radiological Findings of Michel Aplasia.

INTRODUCTION: Congenital abnormalities of the inner ear is the most common cause of neurosensory hearing loss. Michel inner ear deformity is a rare developmental anomaly refers to the total aplasia of the inner ear. It is caused by developmental arrest of otic placode early during the third week of gestational age. CASE REPORT: We have discussed here that three year old girl diagnosed Michel aplasia with temporal bone computed tomography (CT) and temporal magnetic resonance imaging (MRI) findings.

Unenhanced 3D turbo spin echo MR angiography of lower extremity arteries: comparison with 128-MDCT angiography.

PURPOSE: This study aimed to investigate the feasibility and diagnostic power of unenhanced 3D turbo spin echo MR angiography sequence (a technique based on subtraction of corresponding images acquired in diastole and systole, Syngo Native Space-Siemens healthcare) to identify peripheral artery disease (PAD). MATERIALS AND METHODS: Thirty patients (619 arterial segments in total) suspected with PAD and who were assessed with lower extremity MDCT angiography were examined starting from the level of aortic bifurcation for both lower extremities by 3D native space MR angiography. Two readers assessed the image quality of native space MR angiography and number of lesions, their degrees of stenosis and localizations. The differences and compliance between the readers in the parameters assessed were investigated. RESULTS: Out of 619 segments; Reader 1 considered 187 segments (30.2 %) and Reader 2 considered 177 segments (28.6 %) to have poor and inadequate MR image quality. When compared to CTA, sensitivity, specificity and diagnostic accuracy of native space MR angiography were calculated as 81.0, 83.1, 82.6 %, respectively, by Reader 1, while the same parameters were calculated as 69.9, 92.6, 84.9 %, respectively, by Reader 2. When the two readers were examined together, sensitivity, specificity, diagnostic accuracy were found to be 76.3, 88.1, 83.7 %, respectively, and the positive predictive value and negative predictive value was 70.3 and 89.9 %, respectively. A significantly better image quality was acquired with the age group below 50 years (p = 0.002). CONCLUSION: Native space MR angiography technique can be used as the first-step imaging technique before contrast-enhanced examinations in young and middle age patients with suspected PAD and for patients with the risk of nephrogenic systemic fibrosis in chronic renal failure.

Aspergilloma Mimicking Metastasis in a Case with Laryngeal Carcinoma.

INTRODUCTION: Aspergilloma is a fungal ball which is composed of hyphal structure fungus, fibrin, mucus and cellular debris and settled in a pre-existing pulmonary cavity or an ectatic bronchial. It may cause colonization in patients with an immunosuppressive and underlying lung disease. Although chest radiography provides valuable information, it can be scanned more effectively by computed tomography (CT). Monitoring fungal ball within the cavity in CT provides establishing the diagnosis. CASE REPORT: However, in this case report, we presented a case with operated laryngeal carcinoma whom we first had considered to have metastasis and who had received a diagnosis of aspergilloma in CT and Positron emission tomography (PET). CONCLUSION: Imaging findings may remain limited in definitive diagnosis of aspergilloma. Therefore, surgical resection will allow for both pathological diagnosis and treatment.

Unusual case of spinal epidermoid cyst and a concomitant spinal arachnoid cyst.

A 38-year-old woman presented with a 12-month history of subjective weakness and pain in her legs. Thoracolumbar MRI revealed two spinal intradural cystic lesions at T5-6 and T11 levels, respectively. The lesion located at the T5-6 level was heterogeneously hyperintense on T2-weighted images and heterogeneously hypointense on T1-weighted images. This lesion showed high signal intensity on diffusion weighted MRI (DWI) and low signal intensity on apparent diffusion coefficient images (ADC). According to the MRI findings, we reported this tumour as a spinal epidermoid cyst. The pathology result suggested that the lesion was an epidermoid cyst. The second intradural lesion, at the T11 level, showed a hypointense signal on T1 and hyperintense signal on T2 images. However, in contrast to the superior lesion, this lesion was hypointense on DWI and hyperintense on ADC. We evaluated the second lesion as an arachnoid cyst according to the MRI findings.

MRI Findings of Talocalcaneal Coalition: Two Case Reports.

INTRODUCTION: Tarsal coalition is abnormal fusion of two or more tarsal bones and is a common cause of foot pain. There are osseous, cartilaginous and fibrous subtypes. Calcaneonavicular and talocalcaneal coalitions are more frequent. Radiography is the primary diagnostic tool, however CT and MRI are precious examinations for differential diagnosis of osseous /non-osseous coalitions separations. Furthermore, cross-sectional imaging methods indicate the extension and secondary degenerative joint changes. CASE REPORTS: The detection of bone marrow of edema in the articulation area is valuable for diagnosis Hereby, we present two cases, 24 years old female and 35 years old male, with the diagnosis of talocalcaneal coaliation. We also discuss MRI and radiographic findings.

Vision Loss and RNFL Thinning after Internal Carotid Arter Occlusion and Middle Cerebral Artery Infarction.

INTRODUCTION: Ischaemic, traumatic or neoplasmic damage to the optic chiasm, optic tract or lateral geniculate nucleus affects the retinal ganglion cell (RGC) axons, detected as reduced retinal nerve fiber layer (RNFL) thickness around the optic nerve head. We report a case of vision loss and reduced RNFL thickness after internal carotid artery (ICA) occlusion and middle cerebral artery (MCA) infarction. CASE REPORT: A 33-year-old woman with a 3-month history of vision loss in right eye and left hemiplegia. The best corrected visual acuity was 1.0 in left eye and there was no light perception in the right eye. Ocular motility, intra-ocular pressure, anterior segments were normal in the both eyes. Her fundus examinations were normal except optic atrophy in the right eye. Visual field test was not performed because of cooperation difficulties. Magnetic resonance imaging (MRI) revealed an infarction of the right MCA. Computed tomographic angiography showed right ICA occlusion. Optical coherence tomography (OCT) demonstrated 6 clock hours of RNFL thinning in the right eye. Average RNFL thickness of the right and left eyes were 53µm, 96 µm respectively. CONCLUSIONS: Our findings show that a relatively short period of ICA occlusion and MCA infarction can cause vision loss and thinning of the RNFL.

Relationship between erectile dysfunction and silent coronary artery disease: detection with multidetector computed tomography coronary angiography.

AIM: Our aim was to determine the relationship between erectile dysfunction (ED) and silent coronary artery disease (CAD) by multidetector computed tomography (MDCT) coronary angiography. METHODS: Thirty consecutive men with nonhormonal and nonpsychogenic ED and with no cardiac symptoms were evaluated. Medical history, physical examination and laboratory investigation were performed. The five-item brief form of the International Index of Erectile Function (IIEF-5) was performed for evaluation of ED. The Agatston score (AS) was determined from MDCT images under beta blockade to induce bradycardia. The MDCT coronary angiography findings were evaluated by two radiologists blinded to the clinical findings. Patients were classified into three categories (mild, moderate and severe ED) according to IIEF-5 scores and into five categories (very low, low, moderate, moderately high and high CAD risk) according to the AS. RESULTS: Mean age was 58.3 ± 8.7 years (46-79). 6 patients had hypertriglyceridemia, 4 had hypercholesterolemia and 4 had hyperglycemia. All patients had normal early morning testosterone levels. Regarding IIEF-5 scores, none of them had mild ED, 14 had moderate ED and 16 had severe ED. Of the 14 patients with moderate ED, 21.4% had low and 28.5% had moderate CAD risk regarding AS. Of the 16 patients with severe ED, 25% had moderate, 31.2% had moderately high and 25% had high CAD risk regarding AS. Increasing age was a risk factor for high AS (p = 0.045). There was a significant correlation between AS and ED severity (p = 0.01). CONCLUSIONS: ED and CAD often coexist. MDCT coronary angiography can detect coronary lesions and allow appropriate medical intervention.