Publications by authors named "Pace-Asciak P"

Thyroid and parathyroid surgery requires careful dissection around the vascular pedicle of the parathyroid glands to avoid excessive manipulation of the tissues. If the blood supply to the parathyroid glands is disrupted, or the glands are inadvertently removed, temporary and/or permanent hypocalcemia can occur, requiring post-operative exogenous calcium and vitamin D analogues to maintain stable levels. This can have a significant impact on the quality of life of patients, particularly if it results in permanent hypocalcemia.

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The surgical management of thyroid and parathyroid disease has evolved considerably since the era of Theodor Kocher. We review the current trends in thyroid and parathyroid surgery concerning robotic surgery for remote access, the use of parathyroid autofluorescence detection technology to aid in the prevention of hypocalcemia as well as the use of thermal ablation to target thyroid nodules in a minimally invasive way. We also discuss how artificial intelligence is being used to improve the workflow and diagnostics preoperatively as well as for intraoperative decision-making.

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Head and neck cancer (HNC) is the seventh most common malignancy, with oropharyngeal squamous cell carcinoma (OPSCC) accounting for a majority of cases in the western world. While HNC accounts for only 5% of all cancers in the United States, the incidence of a subset of OPSCC caused by human papillomavirus (HPV) is increasing rapidly. The treatment for OPSCC is multifaceted, with a recently emerging focus on immunotherapeutic approaches.

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Lymph node metastases in non-well differentiated thyroid cancer (non-WDTC) are common, both in the central compartment (levels VI and VII) and in the lateral neck (Levels II to V). Nodal metastases negatively affect prognosis and should be treated to maximize locoregional control while minimizing morbidity. In non-WDTC, the rate of nodal involvement is variable and depends on the histology of the tumor.

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Well differentiated thyroid cancer is a common malignancy diagnosed in young patients. The prognosis tends to be excellent, so years of survivorship is expected with low risk disease. When making treatment decisions, physicians should consider long-term quality of life outcomes when guiding patients.

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Objectives: Evidence to support Epstein-Barr virus (EBV)-directed population nasopharyngeal carcinoma (NPC) screening has been growing. Familial aggregation is a well-recognized phenomenon in endemic regions. This systematic review summarizes the role of EBV-directed screening in individuals with a positive family history (FH+) of NPC.

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The field of endocrine surgery has expanded from the traditional open neck approach to include remote access techniques as well as minimally invasive approaches for benign and malignant thyroid nodules. In experienced hands and with careful patient selection, each approach is considered safe, however complications can and do exist. Post-operative dysphonia can have serious consequences to the patient by affecting quality of life and ability to function at work and in daily life.

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In the past decade, there has seen been a shift from treating all thyroid cancer surgically, to favoring less aggressive approaches for low-risk thyroid cancer. Surgery was historically the treatment of choice for most thyroid cancer. Active surveillance has emerged as an alternative for low-risk thyroid cancer in select patients.

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Thyroid surgery is one of the most common head and neck procedures. The thyroid can be accessed through an anterior cervical incision, or by remote access techniques such as the transoral endoscopic thyroidectomy vestibular approach (TOETVA) which is favored for its ease, safety and direct plane to the thyroid gland. Other novel approaches for targeting small-localized well-differentiated thyroid cancer are by thermal ablation, namely ultrasound guided radiofrequency ablation.

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Continuous and intermittent intraoperative nerve monitoring (IONM) has become an important asset for endocrine surgeons over the past few decades. The ability to determine neurophysiologic integrity of the recurrent laryngeal nerve (RLN) and external branch of the superior laryngeal nerve (EBSLN) on top of identification and meticulous dissection of the nerve in the surgical field, has allowed for advances in technology and improved outcomes when it comes to prevention of vocal fold immobility. This article aims to compare in review continuous and intermittent nerve monitoring (CIONM, IIONM), as well as review the current paradigms of their use.

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Graves' disease (GD) can be managed by antithyroid drugs (ATD), radioactive iodine (RAI) and surgery. Thyroidectomy offers the highest success rates for both primary and persistent disease, yet it is the least recommended or utilized option reaching <1% for primary disease and <25% for persistent disease. Several surveys have found surgery to be the least recommended by endocrinologists worldwide.

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Thermal and chemical ablation are minimally invasive procedures that avoid removal of the thyroid gland and target symptomatic nodules directly. Internationally, Radiofrequency ablation (RFA) is among one of the most widely used thermal ablative techniques, and is gaining traction in North America. Surgery remains the standard of care for most thyroid cancer, and in the right clinical setting, Active Surveillance (AS) can be a reasonable option for low risk disease.

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Article Synopsis
  • Benign thyroid nodules are common, but most aren't problematic, with only a few being toxic or autonomously functioning thyroid nodules (AFTNs).
  • Current treatment options for hyperthyroidism include medications, radioactive iodine, or surgery, but these can have risks and may not suit all patients.
  • The paper discusses two new treatment methods for AFTNs: one surgical (transoral endoscopic thyroid surgery) and one non-surgical (radiofrequency ablation), to provide safer alternatives for patients.
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Article Synopsis
  • The study analyzes the outcomes of transoral endoscopic thyroidectomy vestibular approach (TOETVA) in a North American population and compares it to the conventional transcervical approach (TCA) over a specific time period.
  • Results showed that TOETVA did not have a higher incidence of major complications compared to TCA, with similar rates of temporary injuries related to the procedure.
  • The findings indicate that TOETVA is a safe option for thyroid surgery in North America and that higher body mass index (BMI) does not increase the risk of complications for patients undergoing TOETVA.
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Article Synopsis
  • * The transoral endoscopic parathyroidectomy vestibular approach (TOEPVA) offers a scar-free alternative, but it requires precise preoperative localization through ultrasound and SPECT CT.
  • * Initial studies indicate that TOEPVA is a feasible and safe surgical option for eligible patients.
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Background: There is growing concern that neckties worn by health care professionals may contribute to infections contracted in health care settings. We evaluated the evidence for health-care-associated infections resulting from neckties and whether the evidence is sufficient to warrant a tieless policy in Canada.

Methods: We performed a systematic review to determine whether neckties worn by health care professionals colonize harmful pathogenic bacteria and whether they contribute to the spread of infection to patients in the inpatient or outpatient setting.

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Background: The objectives of this study were as follows: (1) to evaluate frontal sinus ostial patency following balloon dilation with the Ventera Sinus Dilation System, compared with frontal sinusotomy (Draf 2a); and (2) to compare mean blood loss and mean surgical time for frontal sinusotomy using balloon dilation compared with traditional surgical methods.

Methods: A single blinded, randomized, controlled, prospective study was performed at St. Paul's Sinus Center, Vancouver, a tertiary referral rhinology center.

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Objective: To systematically review the literature and appraise the evidence reporting the effects of women's health, including pregnancy, postpartum, menstruation, oral contraception, menopause, and hormone replacement therapy, on common rhinological pathologies and nasal physiology.

Data Sources: Systematic search strategy using MEDLINE (1966-2012) and EMBASE (1980-2012) databases.

Review Methods: Title review, abstract screening, and then full paper analysis were undertaken by 2 authors independently.

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Introduction: Electronystagmography (ENG) testing has been supplanted by newer techniques of measuring eye movement with infrared cameras (VNG). Most techniques of quantifying caloric induced nystagmus measure the slow phase velocity in some manner. Although our analysis is carried out by very experienced assessors, some systems have computer algorithms that have been "taught" to locate and quantify maximum responses.

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Objectives: We present the largest case series on laryngeal candidiasis and review the literature on the diagnosis and management of laryngeal candidiasis.

Subjects And Methods: Fifty-four patients were included in a retrospective chart review of all cases seen at the Pacific Voice Clinic, University of British Columbia, Vancouver, from 1995 to 2005.

Results: The most common presenting symptom was dysphonia (37 patients; 69%).

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Objectives: Kikuchi-Fujimoto disease (KFD) is a rare, benign, self-limiting condition occasionally associated with systemic lupus erythematosus (SLE). Although rising in incidence, nonspecific symptoms make diagnosis difficult. We present a small case series and review the literature to increase awareness of this condition among otolaryngologists.

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Objective: To assess the cost savings if the current policy of treating patients with a MACIS (metastases, age, completeness of resection, invasion, and size) score lower than 6 using radioactive iodine (RAI) was changed to reflect the findings of recent studies.

Design: Retrospective medical record review.

Setting: Mount Sinai Hospital, Toronto, Ontario.

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Background: Published studies of children's neurodevelopment after in utero exposure to cocaine have not separated intrauterine from postnatal environmental effects as cocaine-using mothers cluster in low socioeconomic classes and have other risk factors.

Methods: To overcome this limitation, a study was done to assess physical and neurodevelopmental characteristics of 52 children: 26 were adopted by parents who sought counselling in the Motherisk Program at the University of Toronto for prenatal cocaine exposure, and 26 were controls matched for maternal intelligence quotient (IQ), socioeconomic status and gestational age.

Main Outcome Measures: Head circumference, McCarthy General Cognitive Index (GCI) score, language performance and temperament tests.

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