Posts Tagged ‘microsurgery’
Ahead of Print: Colloid Cyst Remnants
Background: Controversy surrounds the fate of cyst remnants following endoscopic colloid cyst resection.
Objective: Our study evaluated recurrence rates in patients with total endoscopic resection of colloid cysts versus those with coagulated cyst remnants.
Methods: Sixty-five consecutive patients and 67 procedures for endoscopic resection of colloid cysts from 1995 to 2011 were reviewed. Degree of resection was based upon intra-operative assessment and post-operative MRI. Recurrence rates were compared between patients with complete resection versus coagulated cyst remnants.
Ahead of Print: Retrosigmoid Intradural Inframeatal Approach
Background: Surgery of lesions of the petrous apex involving the inframeatal/infralabyrinthine area is challenging and related to high risk of complications. Various extensive skull base approaches have been utilized.
Objective: To present and evaluate our experience with a new hearing preserving extension of the retrosigmoid approach to the inframeatal/infralabyrinthine area.
Methods: The approach was used in three patients harboring lesions in the petrous apex with variable extension in the inframeatal/infralabyrinthine region. The surgical accessibility of the lesions offered by the approach, the completeness of tumor removal, and the outcome, in particular the functional outcome and complication rate, were assessed.
Free Editor Choice with CME: Cavernous Malformation of Brainstem, Thalamus, and Basal Ganglia
Background: Cavernous malformations (CMs) in deep locations account for 9% to 35% of brain malformations and are surgically challenging.
Objective: To study the clinical features and outcomes following surgery for deep CMs and the complication of hypertrophic olivary degeneration (HOD).
Methods: Clinical records, radiological findings, operative details, and complications of 176 patients with deep CMs were reviewed retrospectively.
Virtual Reality and Robotics Supplement: The Evolution of neuroArm
Intraoperative imaging disrupts the rhythm of surgery despite providing an excellent opportunity for surgical monitoring and assessment. To allow surgery within real-time images, neuroArm, a teleoperated surgical robotic system, was conceptualized. The objective was to design and manufacture a magnetic resonance-compatible robot with a human-machine interface that could reproduce some of the sight, sound, and touch of surgery at a remote workstation. University of Calgary researchers worked with MacDonald, Dettwiler and Associates engineers to produce a requirements document, preliminary design review, and critical design review, followed by the manufacture, preclinical testing, and clinical integration of neuroArm. During the preliminary design review, the scope of the neuroArm project changed to performing microsurgery outside the magnet and stereotaxy inside the bore. neuroArm was successfully manufactured and installed in an intraoperative magnetic resonance imaging operating room. neuroArm was clinically integrated into 35 cases in a graded fashion. Read the rest of this entry »
Ahead of Print: Microsurgical Management of Jugular Foramen Schwannomas
Background: Jugular foramen schwannomas are uncommon and surgically challenging lesions.
Objective: To determine the importance of surgical technique on morbidity and recurrence of jugular foramen schwannomas.
Methods: A retrospective review and case-control analysis of a single senior-surgeon series of 81 patients with surgically treated jugular foramen schwannomas was performed focusing on operative technique. Patients undergoing an aggressive, total tumor resection (“Series 1″) were compared with those undergoing more conservative resection focusing on preserving the pars nervosa (“Series 2″).
