No abstract

Cervico-oculo-acoustic (COA) or Wildervanck syndrome is characterized by the triad of Klippel-Feil anomaly, bilateral abducens palsy with retracted bulbs (Duane 'syndrome') and hearing loss. The clinical findings of this syndrome have been well documented. A few case reports with MRI findings have appeared in the literature showing brainstem and cerebellar hypoplasia and vertebral segmentation anomalies. Our case is unique in that diastematomyelia of the lower medulla and cervical cord was accompanied by vermian hypoplasia, tonsillar herniation and resulting triventricular hydrocephalus in a child with Wildervanck syndrome. This case is presented with MR images. Children with Wildervanck syndrome should be investigated for craniospinal abnormalities with MR imaging.

Although anatomical variations of dural venous sinuses are seen frequently, classification of venous sinuses helps surgeons in preoperative evaluation and management, and prevention of possible complications. In this study, we think that a comprehensive evaluation and classification of dural venous sinuses is a significant contribution to the literature.

ABSTRACTaIM: The aim of this study was to try to find parametric ratios for the diagnosis and pathophysiology of carpal tunnel syndrome using MR. MaterIaL and MetHOds:Dominant side wrist MRI examinations of 27 female carpal tunnel patients and 21 normal females were compared. The carpal tunnel contents area / carpal tunnel cross section area ratio was defined, analysed and discussed with the literature. resuLts: Carpal tunnel contents / wrist area ratios of the carpal tunnel patients were measured and compared with the control group. This comparison revealed that the proportion of the contents of the carpal tunnel is increased in the carpal tunnel syndrome patients. Palmar bowing was found to be increased and median nerve cross section area was found to be increased at the proximal entrance of the carpal tunnel.cOncLusIOn: As Phalen has postulated, the volume of the contents of the carpal tunnel were found to be increased in the carpal tunnel syndrome patients. Carpal tunnel cross section areas remained the same with the control group. This increase can be demonstrated by MRI imaging which can provide an evidence for the pathophysiology of carpal tunnel syndrome.keywOrds: Carpal tunnel syndrome, Area measurement, Ratio ÖZ aMaÇ: Bu çalışmanın amacı, el bileği MR incelemesiyle tespit edilen karpal tünel kapsamı/karpal tunel alanı oranları ile karpal tunel sendromuna diagnostik ve patofizyolojik bir yaklaşımda bulunmaktır. yÖnteM ve gereÇLer: 27 karpal tunel hastası kadın ile dominant el bileği MR incelemesi yapılan 21 kadından oluşan kontrol grubunun el bilek MR ları karşılaştırılmıştır. Karpal tunel kapsamı / karpal tunel alanı oranı tanımlanarak bu oran, median sinir alanı ve transverse karpal ligamentteki palmar yaylanma ölçülerek analiz edilmiştir.BuLguLar: Seride karpal tunel kapsamı/karpal tunel alanı oranında karpal tunel sendromlu hastalarda karpal tunel kapsamı lehinde istatistiksel olarak anlamlı bir artış tespit edilmiştir. Hastalarda karpal tunel proksimal girişinde ölçülen median sinir kesit alanlarında ve transvers karpal ligament palmar yaylanmasında da istatistiksel olarak anlamlı bir artış bulunmuştur. sOnuÇ: Karpal tunel sendromlu hastalarda Phalen'in öne sürdüğü gibi karpal tunel kapsamında kronik travmaya bağlı bir artış tespit edilmiştir. Bu kapsam artışına karşılık karpal tunel yüzey alanlarında anlamlı bir artış tespit edilmemiştir. Bu bulgu MR ile gösterilebilmektedir ve karpal tunel sendromunun fizyopatolojisinin anlaşılması konusunda bir kanıt olabilmektedir.anaHtar sÖZcÜkLer: Karpal tunel sendromu, Alan ölçümü, Oran

A 25-year-old woman with a known tectal glioma and hydrocephalus was proved to have spontaneous third ventriculostomy.