AIM: An en bloc orbitectomy is one of the most invasive surgical procedures in the orbit, primarily used to remove advanced malignancies, ensure negative resection margins, and local cancer control. This study examines the indications, clinical features, outcomes, and survival rates of patients who underwent this surgery for periocular and orbital malignancies. PATIENTS AND METHODS: A retrospective consecutive case series of seven patients with various orbital carcinomas managed with en bloc orbitectomy from 2018-2023 at the University Hospital in Pilsen, Czech Republic, was conducted. Minor surgeries and other diagnoses were excluded. RESULTS: The study included seven patients, with an average age of 68.7 years (range 50-83, median 74). Orbitectomy was part of salvage surgery in two patients and debulking in one. R0 resection was achieved in only 50% of cases; defects were reconstructed with a free anterolateral thigh (ALT) flap in one case and local flaps in others. Therapeutic neck dissection was performed in three patients directly after surgery, in one case 15 months after orbitectomy. CONCLUSION: A thorough examination of indications, patient and tumor features, and reconstructive possibilities should precede an en bloc orbitectomy. Despite being highly invasive, it should be adequately indicated to avoid less invasive surgeries that could complicate radical surgery and impair disease control.
- Publikační typ
- časopisecké články MeSH
The use of antiangiogenic and antiresorptive medications, particularly in patients with cancer or osteoporosis, can lead to osteonecrosis of the jaw following tooth extraction, trauma or arising spontaneously- A condition known as medication-related osteonecrosis of the jaw (MRONJ). In this article, we present a unique case of MRONJ in a patient with no history of antiresorptive or antiangiogenic drug use, who was instead taking the anti-interleukin 17-A (Secukinumab) medication for severe psoriasis. This association has not been previously reported in the literature.
- Publikační typ
- časopisecké články MeSH
- kazuistiky MeSH
As a discipline of dentistry, oral implantology deals with the diagnosis, design, insertion, restoration, and/or management of alloplastic or autogenous oral structures for the purpose of regaining contour, function, aesthetics, and speech in a partially or completely edentulous patient. The present review aims to provide the currently available knowledge about the impact of certain systemic disorders and the usage of some medications on the survival rate of dental implant therapy and to highlight the importance of patient management under these conditions. Diabetes, osteoporosis, cardiovascular diseases, and the intake of some medications can increase the risk of the failure of a dental implant. Even though there are relatively few medical contraindications to dental implant treatment, certain conditions may increase the risk of failure or complications.
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
The unique potential of fullerene C60 for various biological applications has ignited significant interest. However, its inherent non-polarity poses a critical challenge for its effective integration within biological systems. This study delves into the intricate physicochemical characteristics of the innovative [C60 + NO] complex using density functional theory and time-dependent density functional theory. The computational analyses encompass molecular charge, surface electrostatic potential, and dipole moment evaluations. Impressively, the dipole moment of the [C60 + NO] complex significantly increases to 12.92 D. Meticulous surface analysis reveals a subtle interplay between molecular structures, indicating weak interactions. The analysis of the absorption spectrum unveils a noteworthy red-shift of 200 nm subsequent to complex formation. To elucidate the electron transfer mechanisms, we explore photo-induced electron transfer through CAM-B3LYP. This exploration elucidates intricate pathways governing electron transfer, with complementary insights gleaned from Marcus theory's outputs, especially the Gibbs free energy of electron transfer. Changes in the physicochemical properties of approaching C60 and NO molecules reveal interesting results compared to separate molecules. These findings resonate profoundly in the context of potential biological and pharmaceutical utilization. With implications for the biomedical area, the outcomes linked to the [C60 + NO] complex kindle optimism for pioneering biomedical applications.
This research introduces a novel approach by incorporating various types of gelatins, including bovine, porcine, and fish skin, into polycaprolactone and poly (lactic-co-glycolic acid) using a solvent casting method. The films are evaluated for morphology, mechanical properties, thermal stability, biodegradability, hemocompatibility, cell adhesion, proliferation, and cytotoxicity. The results show that the incorporation of gelatins into the films alters their mechanical properties, with a decrease in tensile strength but an increase in elongation at break. This indicates that the films become more flexible with the addition of gelatin. Gelatin incorporation has a limited effect on the thermal stability of the films. The composites with the gelatin show higher biodegradability with the highest weight loss in the case of fish gelatin. The films exhibit high hemocompatibility with minimal hemolysis observed. The gelatin has a dynamic effect on cell behavior and promotes long-term cell proliferation. In addition, all composite films reveal exceptionally low levels of cytotoxicity. The combination of the evaluated parameters shows the appropriate level of biocompatibility for gelatin-based samples. These findings provide valuable insights for future studies involving gelatin incorporation in tissue engineering applications.
- Publikační typ
- časopisecké články MeSH
Chronic hyperplastic candidiasis (CHC) presents a distinctive and relatively rare form of oral candidal infection characterized by the presence of white or white-red patches on the oral mucosa. Often mistaken for leukoplakia or erythroleukoplakia due to their appearance, these lesions display nonhomogeneous textures featuring combinations of white and red hyperplastic or nodular surfaces. Predominant locations for such lesions include the tongue, retro-angular mucosa, and buccal mucosa. This paper aims to investigate the potential influence of specific anatomical locations, retro-angular mucosa, on the development and occurrence of CHC. By examining the relationship between risk factors, we present an approach based on machine learning (ML) to predict the location of CHC occurrence. In this way, we employ Gradient Boosting Regression (GBR) to classify CHC lesion locations based on important risk factors. This estimator can serve both research and diagnostic purposes effectively. The findings underscore that the proposed ML technique can be used to predict the occurrence of CHC in retro-angular mucosa compared to other locations. The results also show a high rate of accuracy in predicting lesion locations. Performance assessment relies on Mean Squared Error (MSE), Root Mean Squared Error (RMSE), R-squared (R2), and Mean Absolute Error (MAE), consistently revealing favorable results that underscore the robustness and dependability of our classification method. Our research contributes valuable insights to the field, enhancing diagnostic accuracy and informing treatment strategies.
- Publikační typ
- časopisecké články MeSH
In our study, the effect of the use of autofluorescence (Visually Enhanced Lesion Scope-VELscope) on increasing the success rate of surgical treatment in oral squamous carcinoma (OSCC) was investigated. Our hypothesis was tested on a group of 122 patients suffering from OSCC, randomized into a study and a control group enrolled in our study after meeting the inclusion criteria. The preoperative checkup via VELscope, accompanied by the marking of the range of a loss of fluorescence in the study group, was performed before the surgery. We developed a unique mucosal tattoo marking technique for this purpose. The histopathological results after surgical treatment, i.e., the margin status, were then compared. In the study group, we achieved pathological free margin (pFM) in 55 patients, pathological close margin (pCM) in 6 cases, and we encountered no cases of pathological positive margin (pPM) in the mucosal layer. In comparison, the control group results revealed pPM in 7 cases, pCM in 14 cases, and pFM in 40 of all cases in the mucosal layer. This study demonstrated that preoperative autofluorescence assessment of the mucosal surroundings of OSCC increased the ability to achieve pFM resection 4.8 times in terms of lateral margins.
- Publikační typ
- časopisecké články MeSH
The reconstruction of oral tongue and floor of mouth defects after resections of squamous cell carcinoma is a challenging task in reconstructive surgery aiming for appropriate restoration of oral function and quality of life improvement. In this study, the authors introduce the innovative reconstruction technique of medium-sized defects consisting of tunnelized facial artery myomucosal island flap and submandibular gland flap as the local chimeric flap pedicled on facial vessels. A retrospective case series evaluation of 4 patients suffering from oral cavity cancer (stages III and IVa), who underwent transoral tumor excision with neck dissection and immediate reconstruction in the time period September 2020 to July 2021, was conducted. No flap losses or flap-related complications were identified. No recurrences occurred during the follow-up at 11.0±4.5 months (range: 6-16 mo, median=11 mo). Tunnelized facial artery myomucosal island flap and submandibular gland flap local chimeric flap expands the reconstruction options of medium-sized defects after ablative oral cancer surgery in carefully selected patients primarily not suitable for free flap reconstructions.
- MeSH
- arterie MeSH
- chirurgické laloky krevní zásobení MeSH
- dlaždicobuněčné karcinomy hlavy a krku MeSH
- kvalita života MeSH
- lidé MeSH
- nádory hlavy a krku * MeSH
- nádory úst * chirurgie patologie MeSH
- podčelistní slinná žláza chirurgie patologie MeSH
- retrospektivní studie MeSH
- spinocelulární karcinom * chirurgie patologie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
