Publications by authors named "Panayiotis Kyzas"

The lip-split mandibulotomy (LSMA) is an access procedure that has been used in head and neck (H&N) surgery as an aid to surgical resection of inaccessible tumours of the postertior oral cavity and oropharynx. Anecdotal evidence suggests that it has significant morbidity. Voices of concern within the H&N surgical community suggest that it has been abandoned in favour of technological advances such as robotic surgery.

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We present the case of a 75-year-old patient with a T2N0Mo oral cancer, who underwent surgery for cancer ablation and reconstruction. Intraoperatively, a duplicate internal jugular vein (IJV) was identified. Both segments were preserved.

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Introduction: Osteoradionecrosis (ORN) is a dramatic complication following radiation therapy (RT) for head and neck tumours. Symptoms include pain, trismus, and malodour. ORN can present with exposed necrotic bone, an orocutaneous fistula, and/ or a pathological fracture.

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Surgical tracheostomies have a role in the weaning process of COVID-19 patients treated in intensive care units. A multidisciplinary team approach (MDT) is required for decision making. This process is augmented by specific standard operating practices implemented by senior clinicians.

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Background The incidence of head and neck cancers is increasing, alongside a decrease in associated mortality. Currently, medical and dental practitioners can refer patients to be seen urgently within two weeks. The appropriateness of these referrals has been disputed.

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The coronavirus disease (covid19) pandemic (caused by the SARS-CoV-2 virus) is the greatest healthcare challenge in a generation. Clinicians are modifying the way they approach day-to-day procedures. Safety and reduction of transmission risk is paramount.

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George Peat and colleagues review and discuss current approaches to transparency and published debates and concerns about efforts to standardize prognosis research practice, and make five recommendations.

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Context: Pancreatic adenocarcinoma metastasizing to the mandible is extremely rare, with only 4 previous cases reported in the literature. Here, we present a patient with a metastatic lesion in the mandible as the initial manifestation of pancreatic adenocarcinoma. We also review the incidence, diagnosis, and management of this rare occurrence.

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Prognostic factor research aims to identify factors associated with subsequent clinical outcome in people with a particular disease or health condition. In this article, the second in the PROGRESS series, the authors discuss the role of prognostic factors in current clinical practice, randomised trials, and developing new interventions, and explain why and how prognostic factor research should be improved.

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Background: The treatment for mandibular condyle fractures remains controversial. Conservative management (CM) and open reduction/internal fixation (ORIF) are both used, but the evidence to support superiority of one method over the other has not been assessed.

Methods: We performed a meta-analysis of studies comparing CM versus ORIF in patients with condyle fractures.

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Evidence indicates that allogenic packed red blood cell transfusion results in the host's immunomodulation, and is associated with adverse clinical outcomes after surgery. The aim of this study was to test whether allogenic leukocyte-depleted blood transfusion represents a significant risk factor for postoperative morbidity after oral and oropharyngeal cancer surgery. A total of 142 patients, diagnosed for the first time with oral and oropharyngeal squamous cell carcinoma, and receiving neoadjuvant chemoradiotherapy followed by surgery between 2000 and 2008 were retrospectively included in this study.

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Background: The purpose of this study was to evaluate whether the immunohistochemical expression of p53, p21, p27, cyclin D1, and Ki67 can predict therapy response and survival in patients with oral and oropharyngeal squamous cell carcinoma treated with preoperative chemoradiation.

Methods: Biomarker expression was evaluated by immunohistochemistry in formalin-fixed, paraffin-embedded pretreatment biopsies of 111 homogenously treated patients. We assessed the association between clinicopathological variables including response to neoadjuvant chemoradiotherapy as well as the survival of the patients and the expression of the biomarkers as both dichotomized (positive vs.

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Our main objective was to apply a standard classification to surgical complications after free flap surgery for reconstructions of the head and neck. We used the modified Clavien-Dindo classification in a cohort of 79 patients who were having reconstructions with jejunal free flaps simultaneously with resections of oral and oropharyngeal cancer. The most common minor complication was the need for a blood transfusion, and the most common major complication of a respiratory nature.

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Purpose: The use of prophylactic antibiotics in the treatment of mandible fractures is common practice. The evidence supporting this practice has not been formally assessed for quality. The purpose of this study was to evaluate this empirically.

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Background: Positron emission tomography using 18F-fluorodeoxyglucose (18F-FDG PET) has been proposed to enhance preoperative assessment of cervical lymph node status in patients with head and neck squamous cell carcinoma (HNSCC). Management is most controversial for patients with a clinically negative (cN0) neck. We aimed to assess the diagnostic accuracy of 18F-FDG PET in detecting lymph node metastases in patients with HNSCC.

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Purpose: The amount and quality of research evidence in oral and maxillofacial surgery (OMFS) journals have never been evaluated. The current study aims to empirically assess the evidence available in this literature.

Materials And Methods: The main (Database 1) and neighboring (Database 2) journals of OMFS were manually screened over a 3-year period (2004 to 2006).

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We aimed to understand the extent of the pursuit for statistically significant results in the prognostic literature of cancer. We evaluated 340 articles included in prognostic marker meta-analyses (Database 1) and 1575 articles on cancer prognostic markers published in 2005 (Database 2). For each article, we examined whether the abstract reported any statistically significant prognostic effect for any marker and any outcome ('positive' articles).

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True liver lipomas are extremely rare. We present a case of a female patient with a history of chronic hepatitis B and multiple liver lipomas. The patient was completely asymptomatic.

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Background: Issues of reported study quality have not been addressed empirically with large-scale data in the cancer prognostic literature.

Methods: Eight quality measures pertaining to study design and assay methods (i.e.

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