engleski

Pineal gland cysts follow-up recorded by transcranial sonography (tcs)

Background: Transcranial sonography is a noninvasive neuroimaging method capable for the record of pineal gland region. Aim of our study was to evaluate the possibility of TCS to detect the cystic lesion of the pineal gland, find its correlation with MRI scan and to seek out if TCS might be suitable method of follow-up in such patients. Patients: Seventeen patients with incidental pineal gland cyst detected by MRI scan were evaluated initially and after three years follow-up. Four patients meanwhile underwent surgical treatment. Methods: TCS was performed freehandedly with Aloka ProSound SSD-5500. Pineal cyst was detected as every hypoechogenic area within hyperechogenic gland matrix or hypoechoic lession with or without septum surrounded by thin echoic wall. Maximal width in latero-lateral and antero-posterior line was measured and matched with MRI scans. Pearson linear correlation was performed. Results: Cysts size on TCS scan varied from 2, 5x5 to 18x12 mm in diameter what significantly correlated with results of MRI scan (Pearson's coefficient 0, 96 , p<0, 01). During follow-up we found no increase of size in any of patients and scans performed after surgical treatment showed delineation of cyst what also was seen on MRI scans. Conclusion:The results of our study suggest that TCS is a suitable method of neuroimaging in the evaluation of pineal gland lesions. Although its resolution cannot match the MRI resolution, its repeatability and accuracy might add to its practical value. We suggest that the repeating MRI scanning of such lesions might be replaced by clinical and TCS exam follow-up.

Transcranial sonography; pineal gland; Cyst

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