Murat Asik

Cavernous hemangioma of the cavernous sinus misdiagnosed as a meningioma: a case report and MR imaging findings

Cavernous hemangioma (CH) is a benign vascular malformation. Intracranial CH is generally localized as an intracranial-intraaxial and responsible for 5-13% of all intracranial vascular malformations. Intracranial-extraaxial CHs are rare rather than intracranial-intraaxial CHs. Clinical findings, imaging characteristics, and surgical approach of extraaxial CHs are rather different than intraaxial CHs. Diagnosing cavernous sinus CH preoperatively is very important, but its radiological differential diagnosis is quite difficult. In this study, we present magnetic resonance imaging findings of a 48-year-old male who was considered preoperatively to have meningioma but was diagnosed with cavernous sinus CH during surgery by pathological examination.

Pathological Contrast Enhancement of the Oculomotor and Trigeminal Nerves Caused by Intracranial Hypotension Syndrome

(Headache 2011;51:804‐818)

MRI findings of isoniazid-induced central nervous system toxicity in a child

A 12-year-old female patient was admitted to the pedi-atrics clinic of our hospital with the complaint of failure tothrive. A physical examination showed nothing excepta purified protein derivative (PPD) test scar. Two formerPPD tests that were undertaken 2 months apart were bothpositive (20 mm and 23 mm indurations). A computedtomography (CT) examination was undertaken to investi-gate for lung parenchymal infiltration, but showed noabnormal findings. Sputum and gastric lavage specimenswere collected for culture, and although TB culture wasnegative, 10 mg/kg/day INH and 25 mg/day pyridoxinemedication was started as prophylaxis.Three months after starting prophylactic INH treatment,the patient was referred the pediatric neurology clinic ofour hospital with the complaints of hand tremors anddizziness. A neurological examination revealed intentionaltremor, ataxia, dysdiadokynesia, and dysmetria, andapositiveRombergtest.Noabnormalreflexesornystagmuswere observed. Sensory and cranial nerve examinationswere also normal. Deep tendon reflexes and musclestrength of the upper and lower extremities were alsonormal. A complete blood count and biochemical studiesrevealed no abnormal finding. Serum B12 levels, theerythrocyte sedimentation rate, and thyroid function testswere all within the normal range.Cranial MRI showed bilateral and symmetrical increasedsignal intensity at both cerebellar dentate nuclei andbetween the thalamus and mesencephalic areas on T2-weighted and fluid-attenuated inversion recovery (FLAIR)imaging. Abnormal contrast enhancement was not seen inthe described areas. On diffusion-weighted MRI images,diffusion restriction was present in those areas described(Fig 1). MR angiography, MR venography, and MR spec-troscopy did not show any abnormal findings. After findingthat the blood INH level was 16

Aneurysmal Bone Cyst of Sphenoid Bone and Clivus Misdiagnosed as Chordoma: A Case Report

Aneurysmal bone cysts (ABCs) are benign and rapidly expanding bone destructive lesions of any bone. They are commonly localized in the metaphysis of long bones, whereas skull base ABCs are rare. We report a case of a 21-year-old man who had been misdiagnosed as chordoma and undergone surgery. However, histopathological examination revealed it to be an ABC.

Morbid Obezite Nedeniyle Gastrik By-pass Cerrahisi Yapılan Olguda Wernicke Ensefalopatisi ve MRG Bulguları

Ya z›fl ma Ad re si/Ad dress for Cor res pon den ce: Zehra Işık Haşıloğlu İstanbul Üniversitesi, Cerrahpaşa Tıp Fakültesi, Radyoloji Anabilim Dalı, Nöroradyoloji Bilim Dalı, İstanbul, Türkiye Tel.: +90 212 414 30 00 E-pos ta: zhasiloglu@gmail.com Gelifl Tarihi/Received: 01 Ağustos 2012 Ka bul Ta ri hi/Ac cep ted: 02 Ekim 2012 The Medical Bulletin of Haseki Training and Research Hospital, published by Galenos Publishing. All rights reserved. Haseki T›p Bülteni, Galenos Yay›nevi taraf›ndan bas›lm›flt›r. Her hakk› sakl›d›r.