Erdem C.Z. | Erdem L.O. | Comert M. | Ustundag Y. | Gundogu S.

Article | 2003 | Clinical Radiology58 ( 11 ) , pp.899 - 901

In summary, we conclude that MRA was a useful diagnostic technique for the investigation of vascular aneurysms of the portal venous system. The routine use of non-invasive radiological methods, such as ultrasonography, can indicate PVAs, however, MRA is useful to confirm or resolve any doubt about the diagnosis, without the need for invasive techniques such as angiography.

Erdem C.Z. | Altin R. | Erdem L.O. | Kargi S. | Kart L. | Cinar F. | Ayoglu F.

Article | 2003 | Journal of Clinical Ultrasound31 ( 5 ) , pp.250 - 257

Purpose. We used color Doppler sonography to determine blood flow velocities in the extraocular orbital vessels of patients with obstructive sleep apnea syndrome (OSAS) and compared the results with those of healthy control subjects without OSAS. Methods. Patients with OSAS were classified according to the apnea-hypopnea index (AHI) as having mild OSAS (AHI < 20) or severe OSAS (AHI ? 20). The peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistance index were measured in the ophthalmic artery (OA), central retinal artery (CRA), lateral short posterior ciliary artery, and medial short posterior ciliary artery using . . . color Doppler sonography. Only 1 eye was measured in each study participant, and right and left eyes were chosen randomly. The blood flow velocities of patients with OSAS and those of control subjects were compared with the Kruskal-Wallis test and Wilcoxon's rank-sum test. Results. The study comprised 30 patients (15 with mild and 15 with severe OSAS) and 20 healthy control subjects. Blood flow velocities were higher in most measured vessels in patients with OSAS than they were in the control subjects. Among patients with mild OSAS, the PSVs and EDVs in the posterior ciliary arteries were statistically significantly higher than those of the control group (p < 0.05), but those in the OA and CRA did not differ significantly between the mild OSAS group and the control group (p > 0.05). However, as the severity of OSAS increased, the PSVs and EDVs of the OA and CRA were also affected (p < 0.05). Conclusions. Color Doppler sonographic measurements of blood flow parameters in the orbital vessels may differ significantly between patients with OSAS and those without the syndrome. Therefore, OSAS should be considered in addition to other conditions when interpreting the results of color Doppler sonography of the extraocular orbital vessels if the clinical history points toward such a diagnosis. © 2003 Wiley Periodicals, Inc Daha fazlası Daha az

Erdem C.Z. | Erdem L.O. | Cinar F. | Gündogdu S.

Article | 2003 | Kulak burun bogaz ihtisas dergisi : KBB = Journal of ear, nose, and throat11 ( 4 ) , pp.121 - 124

Brown tumor of the paranasal sinuses is rare. It is a benign fibro-osseous lesion, typically presenting as an expansile mass that leads to a cortical defect. We presented the radiological findings of a brown tumor of the right maxillary sinus in a 13-year-old boy who presented with complaints of swelling in the right maxillary region, headache, and epistaxis. Biochemical findings were compatible with primary hyperparathyroidism. The lesion was removed by partial parathyroidectomy. No recurrences or residual mass were detected during a six-month follow-up period.

Erdem L.O. | Erdem C.Z. | Kargi S.

Article | 2003 | Kulak burun bogaz ihtisas dergisi : KBB = Journal of ear, nose, and throat10 ( 5 ) , pp.208 - 211

Fibrous dysplasia is an uncommon benign disease of the bone, with slow progression. Monostotic involvement of the paranasal sinuses is rare. We report a 54-year-old woman who had complaints of facial asymmetry, chronic sinusitis, recurrent headaches, and nasal obstruction for two years. Conventional radiography showed opacification and expansion of the maxillary sinus. Axial and coronal computed tomography scans showed a heterogeneous mass that expanded the right maxillary sinus, leading to nasal obstruction and cortical thickening of the maxilla. No signs of destruction or erosion in the cortical bone were identified. An endonasal . . .endoscopic biopsy was performed and the diagnosis of fibrous dysplasia was confirmed histologically Daha fazlası Daha az