Robot-assisted ventral sacral Tarlov cystectomy; A case report

•Tarlov cysts are incidental findings that often affect the sacral nerve roots.•We present a rare case of a sacral root Tarlov cyst with large pelvic extension.•Management of such cases can be elusive, due to the cyst location.•Robot-assisted cystectomy surgery achieved a successful resection and pain relief.•This report endorses such minimally invasive techniques to reach sacral roots.