Navigation-Guided Transnasal Endoscopic Delineation of the Posterior Margin for Maxillary Sinus Cancers: A Preclinical Study.

Background: The resection of advanced maxillary sinus cancers can be challenging due to the anatomical proximity to surrounding critical anatomical structures. Transnasal endoscopy can effectively aid the delineation of the posterior margin of resection. Implementation with 3D-rendered surgical navigation with virtual endoscopy (3D-SNVE) may represent a step forward.

Long-term survival of head and neck squamous cell carcinoma after bone marrow transplant.

Purpose: The risk of developing head and neck squamous cell carcinoma (HNSCC) in patients with graft versus host disease (GVHD) after bone marrow transplant (BMT) is well established but large series reporting outcomes are sparse.

Methods: Retrospective, single institution, study of patients with GVHD and HNSCC after BMT, between January 1, 1968, and June 30, 2016.

Results: In total, 25 patients were studied, of which 21 (84%) were male and 4 (16%) were female.

Navigation-guided osteotomies improve margin delineation in tumors involving the sinonasal area: A preclinical study.

Objectives: To demonstrate and quantify, in a preclinical setting, the benefit of three-dimensional (3D) navigation guidance for margin delineation during ablative open surgery for advanced sinonasal cancer.

Materials And Methods: Seven tumor models were created. 3D images were acquired with cone beam computed tomography, and 3D tumor segmentations were contoured.

Cricotracheal resection for adult subglottic stenosis: Factors predicting treatment failure.

Objectives/hypothesis: Identify predictors of decannulation failure after cricotracheal resection (CTR) and thyrotracheal anastomosis (TTA) in patients with subglottic stenosis (SGS).

Study Design: Retrospective cohort study.

Methods: Charts of patients undergoing CTR and TTA for SGS at the University Health Network, Toronto, Ontario, Canada between 1988 and 2017 were reviewed.

Intraoperative cone-beam CT-guided osteotomy navigation in mandible and maxilla surgery.

Objectives: Surgical navigation systems based on preoperative imaging are now increasingly used for guidance of head and neck resection and reconstruction. The primary aim of this study was to quantify osteotomy cutting accuracy using an image-guidance system for intraoperative cone-beam computed tomography (CBCT) imaging and surgical saw navigation. To enable clinical translation of this CBCT-guided navigation system, a secondary aim of the study was to design and fabricate a patient reference tracker suitable for clinical use on a mobile mandible.

Laryngeal Split and Rib Cartilage Interpositional Grafting: Treatment Option for Glottic and Subglottic Stenosis in Adults.

Optimal management of tracheal stenosis depends on identifying causative factors. Risk factors include high tracheostomy, cricothyroidotomy, prolonged intubation, and proximal migration of an endotracheal tube cuff. Management ranges from conservative observation to endoscopic procedures or open surgical resections.

Real-time continuous image-guided surgery: Preclinical investigation in glossectomy.

Objectives/hypothesis: To develop, validate, and study the efficacy of an intraoperative real-time continuous image-guided surgery (RTC-IGS) system for glossectomy.

Study Design: Prospective study.

Methods: We created a RTC-IGS system and surgical simulator for glossectomy, enabling definition of a surgical target preoperatively, real-time cautery tracking, and display of a surgical plan intraoperatively.

Ludwig's Angina-A Controversial Surgical Emergency: How We Do It.

Objectives. To review the current protocols used for management of Ludwig's angina and to assess the efficacy of conservative measures in these cases. Methods.

Deeply infiltrating endometriosis: pathogenetic implications of the anatomical distribution.

Background: To investigate whether knowledge of the anatomical distribution of histologically proven deeply infiltrating endometriosis (DIE) lesions contributes to understanding the pathogenesis.

Methods: Observational study between June 1992 and December 2004 (retrospective study between 1992 and 2000; prospective study between 2001 and 2004). Continuous series of 426 patients suffering from pelvic pain who underwent complete surgical exeresis of DIE.