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. 2018 Jun 5;9:400. doi: 10.3389/fneur.2018.00400

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Copyright © 2018 Rosazza, Deleo, D'Incerti, Antelmi, Tringali, Didato, Bruzzone, Villani and Ghielmetti.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Preoperative MRI, type of surgery and postoperative scan of the four patients. Case 1 presented severe atrophy of the right hemisphere; rolandic convolutions were partially spared, and CST partially recognizable. The type of surgery was right frontal lobectomy. Postoperative MRI showed that the right CST was not recognizable anymore. Case 2 presented a right frontal malacic area partially sparing the motor cortex and the right CST. The type of surgery was a right fronto-central cortectomy with disconnection. Postoperative MRI showed removal of the upper part of motor cortex and degeneration of the right CST. Case 3 presented a large left frontal malacic area, sparing the upper part of the motor cortex, but involving the posterior limb of the internal capsule, and the CST. The type of surgery was right frontal lobectomy. After surgery, frontal convolutions were not recognized anymore. Case 4 presented a large left malacic area sparing the upper part of the motor cortex, but involving the internal capsule and the CST. The type of surgery was a right fronto-central cortectomy with partial disconnection, as observed in the postoperative CT scan.