Gingiva squamous-cell carcinoma in a non-smoking patient with occupational exposure to solvent siphoning using mouth: case report and literature review.

Background: While overall head and neck cancer incidence decreases due to reduced tobacco and alcohol consumption, the incidence of HPV negative oral cavity squamous cell carcinoma (SCC) is raising in several industrialized countries, especially in non-smoking and non-drinking patients. Case presentation: We document a case of gingiva SCC in a 56 years old never-smoker patient reporting low alcohol consumption and unusual occupational solvent exposure. The HPV-negative lesion was surgically removed in 2018, and the patient remains in complete remission 4 years after recurrent surgery in 2019. In 2021, the patient was referred to the occupational cancer consultation. The patient worked as screen printer for 18 years. He reported mouth siphoning every 2-3 days to transfer organic solvents (mainly aromatic hydrocarbons and ketones) from containers into smaller recipients, with regular passage of solvents into his mouth. Conclusion: According to the literature, the frequency of solvent siphoning using mouth is likely to be underestimated. While our review did not find studies reporting longterm consequences to the oral cavity of mouth siphoning, current evidence supports a positive association of upper aero digestive tract SCC with occupational exposures to organic solvents and printing processes. In absence of major extraprofessional factors, the HPV-negative gingiva SCC of this patient might be attributable to the regular occupational oral solvent exposure. While the available evidence remains limited to formally establish a causal relationship, clinicians should investigate this hazardous work practice in patients with OSCC and history of solvent exposures.

Head and neck reconstruction in vessel-depleted necks: Case report of a labio-mental and mandibular reconstruction using an arteriovenous loop.

Major defects of the facial structures cause severe functional and esthetic impairment. Difficulty in head and neck reconstruction lies in cases of secondary, tertiary, or further reconstruction. This is not a rare situation for patients who had cancer of the upper airways, since the rate of recurrence, second location, or osteoradionecrosis is high. Multiple surgeries and radiation therapy cause significant fibrosis and scar tissues, making any further reconstruction a major challenge for the surgeon when operating patients with vessel- depleted neck. We report our experience with a clinical case of a patient to whom we performed a double free flap reconstruction anastomosed on a vascular loop in a context of vascular cervical desert. In our case, the use of an arteriovenous loop proved to be a reliable approach for a vessel-depleted free tissue reconstruction. This technique has received insufficient attention, yet it provides a means to establish dependable vascular alternatives.

Photography in orthognathic surgery: A standardized protocol and storage legal implications.

Medical photography is an essential tool in orthognathic surgery to facilitate diagnosis, preoperative planning, and follow-up. Photographic documentation has clinical, research, teaching and legal applications. An accurate diagnostic approach and surgical planning of dentofacial deformity requires the ability to work with reproducible and measurable photographic images. It must also respect certain legislative rules for its use within a health institution and the dissemination of images in the educational and scientific framework. We propose through this narrative review a standardized protocol to obtain reproducible images in the different planes of space. We also review and discuss fundamental points for setting up a photographic room dedicated to photography in orthognathic surgery.