2014-05-01, TOPRAK, HÜSEYİN, ARALAŞMAK, AYŞE, YILMAZ, TEMEL FATİH, ÖZDEMİR, HÜSEYİN, TOPRAK, HÜSEYİN, ARALAŞMAK, AYŞE, YILMAZ, TEMEL FATİH, ÖZDEMİR, HÜSEYIN

Idiopathic orbital pseudotumor (IOP) is a benign inflammatory condition of the orbit without identifiable local or systemic causes. Bilateral massive orbital involvement and extraorbital extension of the IOP is very rare. We present an unusual case of IOP with bilateral massive orbital infiltration extending into maxillofacial regions and discuss its distinctive magnetic resonance imaging (MRI) features that help to exclude other entities during differential diagnoses.

2017-01-01, ARALAŞMAK, AYŞE, KARAALİ, KAMİL, ÖZDEMİR, HÜSEYİN, ALKAN, ALPAY, TOPRAK, HÜSEYİN, SİNDEL, TİMUR, ŞENOL, UTKU, ÇEVİKOL, CAN, ARALAŞMAK, AYŞE, TOPRAK, HÜSEYİN, ÖZDEMİR, HÜSEYIN, ALKAN, ALPAY

Purpose. The carotid-cavernous fistula (CCF) is an abnormal arteriovenous communication and its drainage pathways may affect the clinic presentation and change treatment approach. We evaluated drainage patterns of CCFs by digital subtraction angiography (DSA) and categorized drainage pathways according to their types and etiology. Materials and Methods. Venous drainage patterns of 13 CCFs from 10 subjects were studied and categorized as anterior, posterior, superior, inferior, and contralateral on DSA. Drainage patterns were correlated to types and etiology of CCFs. Diagnosis of CCFs was first made by noninvasive imaging techniques. Results. On DSA, traumatic CCFs were usually high flow, direct type while spontaneous CCFs were usually slow flow, indirect type. Bilaterality and mixed types were observed among the indirect spontaneous CCFs. In all CCFs, anterior and inferior drainages were the most common. Contrary to the literature, posterior and superior drainages were noted only in high flow and long standing direct fistulas. Contralateral drainage was not observed in all, supporting plausible compartmentalization of cavernous sinuses. Conclusion. Types, etiology, and duration of the CCFs may affect their drainage patterns. DSA is valuable for categorization of CCFs and verification of drainage patterns. Drainage pathways may affect the clinic presentation and also change treatment approach.

2016-04-01, Erdogan, EZGİ BAŞAK, Ozdemir, HÜSEYİN, Aydin, MEHMET, ERDOĞAN, EZGİ BAŞAK, ÖZDEMİR, HÜSEYIN, AYDIN, MEHMET

Although curative treatment is surgery (resection/transplantation) and for small lesions ablative strategies, in primary liver carcinomas such as hepatocellular carcinoma and cholangiocellular carcinoma, palliative treatment is used for most of these patients because of lack of surgical options. These treatments are regional treatments such as transarterial chemoembolization, radiofrequency ablation, or microwave ablation and systemic treatments such as tyrosine kinase inhibitors. Surgery and chemotherapy are the main treatment options for metastatic liver tumors, particularly in colorectal tumors, although local treatment options are used for these patients. In recent years, transarterial radioembolization with yttrium-90 microsphere has emerged as a local treatment option in primary and metastatic liver tumors. The aim of this treatment is to provide an effective radiation dose distribution for the tumor in the liver tissue and to give the lowest dose in order to not harm the intact liver tissue. Radioembolization has proven to be as effective as other available palliative treatments in primary and secondary liver tumors and is a treatment method that is well tolerated. It has a risk for serious life-threatening complications, although this rate is low. Toxicity can be kept at a minimum with adequate technical and rigorous application in experienced hands and in accordance with multidisciplinarity. It is hoped that the effectiveness of radioembolization is further increased in the future by technological developments, researches on dosimetry, its use along with radiosensitizing agents, and various treatment combinations.