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    Assessment of cervical lymph node metastasis with different imaging methods in patients with head and neck squamous cell carcinoma
    (2005) Ako?lu, Ertap; Dutipek, Murat; Bekiş, Recep; De?irmenci, Berna; Ada, Emel; Güneri, Ataman
    Objective: To determine the predictive value of different imaging methods,-computed tomography (CT), magnetic resonance imaging (MRI), ultrasonography (US), and single-photon emission tomography (SPECT),-for cervical node metastasis. Design: Prospective clinical trial. Setting: An academic otolaryngology department. Methods: Twenty-three consecutive patients with head and neck malignancy were prospectively evaluated for the presence of cervical lymphadenopathy. All patients underwent clinical, CT, MRI, US, and SPECT examinations. Neck dissection was performed for 31 neck sides, and the results of the preoperative evaluation were confirmed by the surgical and histopathologic findings. Main Outcome Measures: The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were calculated for each method and a comparison of the methods was done. Results: The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of CT, MRI, US, and SPECT were 77.7%, 85.7%, 91.3%, 66.6%, and 80.4%; 59.2%, 92.8%, 94.1%, 54.1%, and 70.7%; 81.4%, 64.2%, 81.4%, 64.2%, and 75.6%; 55.5%, 92.8%, 93.7%, 52.0%, and 68.2%, respectively. Both CT and US were found to be superior to clinical examination. There was no statistically significant difference between US and CT. US was found to be superior to MRI and SPECT in detecting cervical node metastasis. CT was also superior to SPECT. Conclusion: Our data show that, despite high specificity rates, especially with SPECT, none of the currently available imaging methods are reliable in evaluating the occult regional metastasis because the negative predictive values of all of these methods are rather low.
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    Intracranial falcine chondroma : A case report and review of the literature
    (2012) Durak, Merih Güray; Niflioğlu, Gülen Gül; Mustafa, Mehmet; Ada, Emel; Acar, Ümit; Canda, Tülay
    İntrakranial kondromlar sıklıkla kafatası tabanından gelişen nadir görülen neoplazmlardır. Bu tümörlerin konveksite, falks serebri, beyin parenkimi ya da ventrikül gibi bölgelerde görülmesi çok daha seyrektir. Yavaş büyüyen bu benign tümörlerin semptomları non-spesifik olup radyolojik bulguları değişkendir. Komplet cerrahi eksizyon sonrası uzun süreli prognozları oldukça iyidir. Burada, 29 yaşında kadın hastada saptanan nadir görülen bir intrakranial falsin kondrom olgusu sunularak, konuyla ilgili literatür bilgileri derlenmiştir.
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    Intracranial Falcine Chondroma: A Case Report and Review of The Literature
    (Journal Neurological Sciences, 2012) Durak, Merih Guray; Niflioglu, Gulen Gul; Akin, Mehmet Mustafa; Ada, Emel; Acar, Umit; Canda, Tulay
    Intracranial chondromas are rare neoplasms that are most commonly located at the skull base. Localization of this tumor in other areas, such as the convexity, falcine area, brain parenchyma or ventricles is less common. These slow-growing benign tumors have nonspecific symptoms, and variable radiological findings. Complete surgical removal is the treatment of choice, and long-term prognosis is favorable. Herein, we describe a rare case of intracranial falcine chondroma in a 29 year-old female, and review the pertinent literature.