Nörofibromatozisli dört olgunun değerlendirilmesi

Nörofibromatozis otozomal dominant geçiş gösteren genetik bir hastalık olup,Tip-1 ve Tip-2 diye iki formu vardır. En sık görülen nörofibromatozis tip-1’in görülme oranı 1/4000 dır. Önemli klinik özellikleri; cafe-au-lait denilen karekteristik pigmente deri lezyonu, Lisch nodülleri denilen pigmente iris hamartomaları ve deri nörofibromalarıdır. Tip-1 Nörofibromatozisli hastalarda hiçbir nörolojik şikayet ve bulgu olmaksızın görüntüleme yöntemleriyle beyin anomalileri tespit edilebilir. Olgularımızda nörolojik şikayet yada muayene bulgusu olmadığı halde, 1, 2 ve 4. olguların kranial manyetik rezonanslarında hamartomalar tespit edildi. Bu çalışmada, Tip-1 Nörofibromatozis düşünülen hastalarda herhangi bir nörolojik defisit olmadan da kranial tutulum olabileceği düşünülerek erken kranial manyetik rezonans çekilmesinin takip ve tedavi açısından önemli olduğu görüşündeyiz.

The evaluation of four cases with neurofibromatosis

Neurofibromatosis is neurocutaneus, and the most common autosomal dominant disorder, occuring in approximately 1 per 4000 people. There are two distinct forms of Neurofibromatosis: type I and type II. Cafe'-au-lait hyperpigmented macules, iris Lisch nodules and neurofibromas are characteristic of Neurofibromatosis -1. Abnormality of brain in the patients can be established with manyetic resonans imaging, without neurological symptoms . Although there were not neurological symptoms and physical findings hamartomas were established with MRI in our case 1,2,4. We are of the opinion that in neurologically asymptomatic children with Neurofibromatosis -1 abnormality of brain can be determined by manyetic resonans imaging which is the important for diagnosis and treatment.

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  • 1. Basu TN, Gutmann DH, Fletcher JA, et al. Aberrant regulation of ras proteins in malignant tumour cells from type 1 neurofibromatosis patients. Nature 1992; 356:713-715
  • 2. Friedman JM, Birch PH. Type 1 neurofibromatosis: a descriptive analysis of the disorder in 1, 728 patients. Am J Med Genet 1997; 70:138-143.
  • 3. Steen RG, Taylor JS, Langston JW, et al. Prospective evaluation of the brain in asymptomatic children with neurofibromatosis type 1: Relationship of macrocephaly to T1 relaxation changes and structural brain abnormalities. American Journal of Neuroradiology 2001;22:810-817.
  • 4. Özcan H, Kandı B, Doğan G, et al. Nörofibromatozis. İnönü Üniversitesi Tıp Fakültesi Dergisi 2002; 4:273-276.
  • 5. Oğuzhan S, Cinbiş M, Ayter Ş, et al. Moleküler analysis of neurofibromatosis type 1 in Turkish families using polymorphic markers. The Turkish Journal of Pediatrics 2003;3:192-197.
  • 6. Van Es S, North KN, McHugh K, Silva MD. MRI findings in children with neurofibromatosis type 1: a prospective study. Pediatr Radiol 1996;26:478-487.
  • 7. Cnossen MH, Moons KG, Garssen MP, et al. Minor disease features in neurofibromatosis type 1 (NF1) and their possible value in diagnosis of NF1 in children
  • 8. Aoki SA, Barkovich AJ, Nishimura K, et al. Neurofibromatosis types 1 and 2: cranial MR findings, Radiology 1989;172:527-34.
  • 9. Mirowitz SA, Sartor K, Gado. Highintensity basal ganglia lesions on T1- weighted MR images in neurofibromatosis. Am J Neuroradiol 1989;10:1159-63.
  • 10. Itoh T, Magnaldi S, White RM, et al. Neurofibromatosis type 1. the evolution of deep gray and white matter abnormalities. Am J Neuroradiol 1994;15:1513-9.
  • 11. Neyzi O, Ertuğrul T. Pediatri. 3.baskı İstanbul, Nobel Tıp Kitapevi, 2002: 1369- 1371.