2018-07-01, Yilmaz, TEMEL FATİH, Aralasmak, AYŞE, Toprak, HÜSEYİN, GULER, Serhat, Tüzün, Umit, Alkan, ALPAY, YILMAZ, TEMEL FATİH, ARALAŞMAK, AYŞE, TOPRAK, HÜSEYİN, ALKAN, ALPAY

Heat stroke is the outcome of over heat stress that results in multiorgan dysfunction with a tendency for central nervous system damage. Brain is very sensitive to hyperthermia, especially the cerebellum that has selective vulnerability to heat stroke. There is complex interaction between heat cytotoxicity, coagulation disorder, cytotoxine - mediated systemic inflammatory response causing multiorgan failure, metabolic derangement, and circulatory insufficiency. We reviewed the literature and discussed brain MRI and MR spectroscopy findings of heat stroke, detailed the pathophysiology underlying brain involvement and proposed excitotoxic injury as an alternative mechanism of brain damage in heat stroke.

2018-01-01, MEHDI, Elnur, Aralasmak, AYŞE, Toprak, HÜSEYİN, Yildiz, Seyma, Kurtcan, SERPİL, Kolukisa, MEHMET, Asil, TALİP, Alkan, ALPAY, ARALAŞMAK, AYŞE, TOPRAK, HÜSEYİN, YILDIZ, ŞEYMA, KURTCAN, SERPİL, KOLUKISA, MEHMET, ASİL, TALIP, ALKAN, ALPAY

Background: Craniocervical Dissections (CCD) are a crucial emergency state causing 20% of strokes in patients under the age of 45. Although DSA (digital substraction angiography) is regarded as the gold standard, noninvasive methods of CT, CTA and MRI, MRA are widely used for diagnosis. Aim: Our aim is to illustrate noninvasive imaging findings in CCD. Conclusion: Emphasizing on diagnostic pitfalls, limitations and mimicking diseases.

2015-03-01, Yildiz, Seyma, Aralasmak, AYŞE, Kadioglu, HÜSEYİN, Toprak, HÜSEYİN, YETİS, Huseyin, Gucin, ZÜHAL, KOCAKOC, Ercan, YILDIZ, ŞEYMA, ARALAŞMAK, AYŞE, KADIOĞLU, HÜSEYİN, TOPRAK, HÜSEYİN, GÜCİN, ZÜHAL

Aim: To describe the radiological findings of idiopathic granulomatous mastitis (IGM). Material and methods: Radiologic findings of 30 women with histopathological diagnosis of IGM were retrospectively evaluated. All had breast feeding history. All the patients had ultrasonography (US), with 12 of them having additional Doppler US. Of 30 patients, 11 had mammography (MG) and 5 MRI. Results: US showed multiple irregular hypoechoic masses and collection areas with tubular connections in 25 of 30. The collection area with low-level internal echoes but without tubular connections, suggesting an abscess were seen in 2 of 30 (6.6%); a hypoechoic mass with an indistinct border in 2 of 30 (6.6%); multiple milimetric hypoechoic nodular masses in 1 of 30 (3.3%). On MG, normal findings were noted in 5 (45.4%); focal asymmetric density in 4 (36.4%), parenchymal distortion in 1 (9%) and diffuse asymmetric opacity with trabecular thickening in 1 (9%) of 30 patients. On MRI, segmental T2 hyperintensity with contrast-enhancement on T1 were seen in 4 of 5 (80%). An enhancing T2 hypointense mass with irregular margin was present in 1 of 5 (20%). Time-signal intensity curve of lesions showed slow enhancement in 1 and moderate in 4 of 5 patients. Conclusions: In IGM, MG findings were nonspecific. In US, multiple irregular hypoechoic masses and collections with tubular connections with fingerlike aspects, and fistulae formation to the skin in patients with breastfeeding history suggested IGM rather than carcinoma. Due to the limited number of patients, no conclusion was reached regarding MRI of IGM.