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Αλέξανδρος Γ. Σφακιανάκης

Tuesday, December 7, 2021

Third molar surgical difficulty scales: systematic review and preoperative assessment form

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Med Oral Patol Oral Cir Bucal. 2021 Dec 7:24951. doi: 10.4317/medoral.24951. Online ahead of print.

ABSTRACT

BACKGROUND: The main objective of this systematic review was to collect the pre-existing scales for assessing the difficulty of third molar extraction. The secondary objective was to design a proposal for a preoperative evaluation protocol for the difficulty of third molar extraction.

MATERIAL AND METHODS: Two independent researchers conducted an electronic search in Pubmed (MEDLINE), Cochrane, and Scopus databases during March 2021. Included studies evaluated the prediction of the difficulty of surgical removal of impacted upper or lower third molars using new indices/scales or pre-existing scales with or without modifications. Articles referring to coronectomies or assessing pre-surgical difficulty using other tools were excluded. Neither language nor publication date restrictions were applied.

RESULTS: Out of 242 articles, 13 prospective cohort studies were finally selected. Seven developed new indices/scales, and 6 assessed the predictive ability of some pre-existing scales. Most of the indices/scales contained radiological variables and few added any patient-related variables. We proposed a preoperative assessment protocol of the difficulty of third molar extraction to facilitate treatment planning and/or considerate referral in cases of high difficulty. This proposal used patient-related, radiological and surgical variables.

CONCLUSIONS: Using a preoperative protocol to evaluate the surgical difficulty, including different patient-specific, radiological and surgical variables, could facilitate treatment planning, help clinicians prevent complications and assess the possibility of referral.

PMID:34874928 | DOI:10.4317/medoral.24951

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Macrophage inhibitory cytokine-1 produced by melanoma cells contributes to melanoma tumor growth and metastasis in vivo by enhancing tumor vascularization

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Macrophage inhibitory cytokine-1 (MIC-1) has been reported to be elevated in various human cancers including melanoma; however, the function of MIC-1 in cancer remains unclear. In this study, we attempt to clarify the role of MIC-1 in tumor pathogenesis by employing the orthotopic B16F1 melanoma mouse model in which seru m MIC-1 levels are positively correlated with tumor size. By stably transfecting a MIC-1 expression construct into B16F1 melanoma cells, we increased the expression and secretion levels of MIC-1. This increase in MIC-1 expression significantly enhanced the growth of tumors derived from B16F1 cells in vivo, despite not affecting in vitro cell growth. The elevated MIC-1 expression in B16F1 cells also resulted in lymph node metastasis in B16F1 tumor-bearing mice, significantly increasing mortality. Interestingly, among small melanoma tumors of similar size, tumors derived from the MIC-1-transfected B16F1 cells exhibited enhanced blood vessel formation compared with those of mock transfectant cells. Also, more MIC-1 was found in well-vascularized tumor regions than in poorly vascularized tumor regions. Moreover, conditioned medium (CM) of the MIC-1-transfected melanoma cells enhanced the angiogenic properties of endothelial cells more than CM of mock transfectant cells. Notably, hypoxic culture conditions forced parental B16F1 cells to secrete more endothelial cell-stimulating factors, among which the function of MIC-1 was confirmed by blocking the effects with an anti-MIC-1 antibody. Taken together, these results suggest that the MIC-1 produced by melanoma cells in response to oxygen deprivation promotes tumor vascularization during melanoma development in vivo, leading to enhanced tumor growth and metastasis. * Jaeseob Lee and Young-June Jin contributed equally to the writing of this article. Received 29 March 2021 Accepted 22 September 2021 Correspondence to Hansoo Lee, PhD, Department of Biological Sciences, College of Natural Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea, Tel: +82 33 250 8530; e-mail: hslee@kangwon.ac.kr Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.
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Thursday, December 2, 2021

Clinical features, molecular characteristics and surgical management of primary penile mucosal melanoma based on the European Association of Urology Penile Cancer Guidelines

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Penile mucosal melanoma is an aggressive and rare genital malignancy. The aim of the present study was to review the management and outcomes of a homogenous cohort of patients with histologically confirmed penile mucosal melanoma, at a single specialist centre. A retrospective review of an institutional database ident ified patients with penile mucosal melanoma over a 10-year period. Patient demographics, histopathological characteristics, type of primary surgery, recurrence, presence of metastatic disease and molecular markers were evaluated. The management of the patients was initially based on the European Association of Urology (EAU) penile cancer guidelines which are primarily for squamous cell carcinoma with inputs from a melanoma multidisciplinary team. Twelve patients with penile mucosal melanoma were analysed. Median [interquartile range (IQR)] age was 69.5 (67.25−81) years. The overall median follow-up (IQR) was 69.5 (20−114) months, while median follow-up for cancer-specific survival (CSS) was 11.5 (8−37) months. Location of primary tumour was glans penis (n = 7), urethra (n = 2) and inner prepuce (n = 3). The CSS at 1, 2 and 5 years after primary surgery was 33%, 16.7% and 0%, respectively. The recurrence-free survival at 1, 3 and 5 months after the primary surge ry was 90%, 67% and 56%, respectively. All patients with metastatic disease or with inguinal lymph node invasion at presentation, died within 25 months of the primary diagnosis. Management based on the modified EAU penile cancer guidelines still led to poor outcomes. We present a management diagram based on our experience. Received 6 June 2021 Accepted 18 September 2021 Supplemental Digital Content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's website, www.melanomaresearch.com. Correspondence to Asif Muneer, MD, FRCS (Urol), Division of Surgery and Interventional Science, NIHR Biomedical Research Centre, University College London Hospital, University College London, 235 Euston Rd, London NW1 2BU, UK, Tel: +44 0203 447 9280; e-mail: asif.muneer@nhs.net Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.
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Evaluation of human acellular amniotic membrane for promoting anterior auricle reconstruction

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Long‐term hearing performance and soft tissue outcomes of the Baha® Attract system in patients with bilateral congenital microtia in a single centre

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Abstract

The Baha® Attract system can provide effective and stable hearing amplification for patients with microtia.

Concurrent surgeries of auricle reconstruction and Baha® Attract implantation do not result in more soft tissue complications.

The number of adverse events increased with the duration of implantation, even one year postoperatively.

Benign skin evolutions, including skin thinning and erythema at the implant side, are commonly seen in Baha® Attract users.

Implants are not necessarily removed when skin necrosis occurs in Baha® Attract users.

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The Liverpool Experience: The Role of Immunosuppression in treating Vasculitic Subglottic Stenosis

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Abstract

Subglottic stenosis (SGS) is the commonest tracheobronchial manifestation of granulomatosis with polyangiitis (GPA), with early recognition and treatment key to preventing its vasculitic progression and fibrosis.

Previous studies have shown SGS to be the first feature of GPA in 4% of cases. It is not uncommon to see negative immunological (10% ANCA negative) and non-specific histological biopsies (77% of head and neck specimens).

Our management strategy emphasized rapid SGS-GPA treatment with limited surgical manipulation of the airway and systemic immunosuppression (IS) to prevent evolution of SGS & concurrent systemic vasculitic relapse.

In our study early multi-disciplinary team involvement to deliver induction IS in the presence of active SGS-GPA led to a procedure free interval (PFI) of 33.3 months. This is a significant increase compared to other published studies.

20% (4/20) of the cohort did not require any surgical input following induction IS during the study's timeframe.

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The effect of radioiodine treatment on the characteristics of TRAb in Graves' disease

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BMC Endocr Disord. 2021 Nov 30;21(1):238. doi: 10.1186/s12902-021-00905-4.

ABSTRACT

BACKGROUND: Graves' disease (GD) is one of the most common autoimmune thyroid diseases (AITDs) in humans, and thyrotropin receptor antibody (TRAb) is a characterized autoantibody in GD. The use of radioactive iodine therapy (RAI) for GD treatment is increasing.

OBJECTIVES: We studied the biological properties of TRAb and evaluated the effect of RAI therapy on TRAb in GD patients.

METHODS : In total, 225 patients (22 onset GD patients without 131I therapy, 203 GD patients treated with 131I therapy) and 20 healthy individuals as normal controls were included in this study. Clinical assessments were performed, and we examined in vitro the biological properties of TRAb in the 22 onset GD patients and 20 controls as well as 84 GD patients with 131I therapy.

RESULTS: Serum TRAb and thyroid peroxidase antibody (TPOAb) levels increased in the initial year of RAI treatment, and both antibodies decreased gradually after one year. After 5 years from radioiodine treatment, TRAb and TPOAb levels decreased in 88% and 65% of GD patients, respectively. The proportion of patients positive for thyroid-stimulatory antibody (TSAb) was significantly higher in the 7-12-month group, and thyroid-blocking antibody (TBAb) levels were elevated after one year in half of the patients who received 131I treatment.

CONCLUSIONS: Treatment of G D patients with radioiodine increased TPOAb and TRAb (their main biological properties were TSAbs) within the first year after therapy, and the main biological properties of elevated TRAb were TBAbs after 1 year.

PMID:34847904 | DOI:10.1186/s12902-021-00905-4

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