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- Çağri Damar, Betül Emine Derinkuyu, Muazzez Asburçe Bike Olgaç Kiliçkaya, Mehmet Öztürk, Çiğdem Öztunali, Ayşe Gül Alimli, Öznur Leman Boyunaga, Murat Uçar, Fatih Süheyl Ezgü, Leyla Tümer, Alp Özgün Börcek, and Ahmet Siğirci.
- Department of Radiology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
- Turk J Med Sci. 2020 Jun 23; 50 (4): 1048-1061.
Background/AimMucopolysaccharidoses (MPS) are a group of hereditary metabolic diseases. The aim of this study was to share the previously unreported calvarial finding of internal hypertrophy of the occipitomastoid sutures (IHOMS) together with some other well-known cranial MRI findings in this patient series.Materials And MethodsA retrospective evaluation was conducted of 80 cranial MRIs of patients who had been diagnosed and followed up with MPS from 2008 to 2019 in our center. Of these patients, 11 had Hurler, 14 had Hunter, 24 had Sanfilippo, 15 had Morquio, 14 had Maroteaux–Lamy, and 2 had Sly disease. The cranial MRIs were assessed in two main groups as parenchymal intradural cranial MRI findings and extradural calvarial findings.ResultsThe most common parenchymal intradural cranial MRI findings were white matter signal alterations (n = 51, 63%) and perivascular space enlargements (n = 39, 48%). The most common extradural calvarial findings were J-shaped sella (n = 45, 56%) and tympanic effusion (n = 44, 55%). Although IHOMS was defined in a relatively small number of the patients (n = 12, 15%), the prevalence rate was high in MPS type I (n = 6, 54%).ConclusionThe abnormal cranial MRI findings of the MPS patients, including the newly identified IHOMS, may provide diagnostic clues to differentiate the type of the disease in radiological imaging.This work is licensed under a Creative Commons Attribution 4.0 International License.
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