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Yıl:2011; Cilt: 48; Sayı: 2>> Özet
TAM METİN
Nöropsikiyatri Arşivi; 2011;48(2):155-157
Median Sinir Lipofibromatöz Hamartomu: Olgu Sunumu
ZÜ Acar, PD Yalınay, B Özalp, AE Öge
29 Mayıs Hastanesi, Nöroloji Bölümü, İstanbul, Türkiye
Median sinir fibrolipomuna bağlı karpal tünel sendromunu düşündüren yakınmaları ve makrodaktilisi olan bir olgu sunulacaktır. Sağ el 2. parmakta makrodaktili ve distal falanks volar yüzde deri çizgilerinde kabalaşma ve hiperkeratoz izlenen 32 yaşında erkek hastanın, on yıldır sağ elinde geceleri uykudan uyandıran uyuşma, karıncalanma yakınmaları olduğu öğrenildi. Hastaya elektromiyografi (EMG) sağ el manyetik rezonans görüntüleme (MRG) ve tanı amaçlı biyopsi yapıldı. EMG'de sağ median sinir duysal aksiyon potansiyeli elde edilemedi. Bilekten uyarımla bileşik kas aksiyon potansiyeli distal latansında uzama, amplitüdünde ufalma saptandı. El MRG'si nde fibrolipom için patognomonik, median sinire kablo görünümü veren avuç içinden önkol distaline kadar izlenen lezyon izlendi. Biyopsi bulguları fibrolipom ile uyumlu idi. Nöral fibrolipom median sinirin nadir görülen selim tümörüdür. MRG sinirin tutulumunu göstermek için en iyi incelemedir. Olguların 1/3'ü nde makrodaktili ile beraberdir. Karpal tünel sendromuna ait şikayetleri olan hastalarda ayırıcı tanıda median sinir lipofibromun da akılda tutulması gerekir.
Lipofibrohamartoma of the Median Nerve: A Case Report
Herein, we present the case of a patient who had complaint suggestive of carpal tunnel syndrome due to fibrolipoma of the median nerve and macrodactyly. 32- [year]-old male patient has macrodactyly of the right index finger and coarse skin lines and hyperkeratosis on the volar aspect of the index finger. The patient reported numbness and tingling sensation in his right hand that have woken him at night for 10 [year]s. Electromyography, magnetic resonance imaging (MRI) of the right hand and diagnostic biopsy were performed to the patient. Sensory action potential of the right median nerve was absent.

The median motor study on the right showed low amplitude of the compound muscle action potential with a markedly prolonged distal latency. MRI scan demonstrated a lesion that extended from the palm to the forearm and gave cable-like appearance to the median nerve which is pathognomonic for lipofibroma. Biopsy result was consistent with fibrolipoma. Neural fibrolipoma is a rare benign tumor of the median nerve. MRI is the best method for observing the involvement of the nerve. In one-third of the cases, macrodactyly is associated with neural fibrolipoma. In the differential diagnosis of patients with carpal tunnel syndrome symptoms, fibrolipoma of the median nerve should also be kept in mind.

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