Advances in Oral and Maxillofacial Surgery最新文献

Salivary gland tumors makes up 3–4% of all head and neck cancers, mucoepidermoid carcinoma is a malignant locally recurrent variant of salivary gland carcinoma. .In this short communication we are presenting a rare entity of mandible “intramedullary mucoepidermoid carcinoma” treated with wide local excision (composite resection) with modified radical neck dissection followed by reconstruction with free fibula osteocutaneous flap.

Ameloblastic carcinoma is a rare malignant odontogenic neoplasm that typically develops in the mandible rather than the maxilla.

Ameloblastic carcinoma is divided into two categories: primary and secondary.

We present a case report observed at the Yaoundé University Teaching Hospital of a secondary maxillary ameloblastic carcinoma following multiple recurrences of a desmoplastic ameloblastoma in a 64-year-old female.

The diagnosis of ameloblastic carcinoma relies heavily on histology.

Epstein-Barr virus associated mucocutaneous ulcer is a lymphoproliferative disorder of B cells in the oral cavity, oropharynx, skin and gastrointestinal tract, usually occurring in immunosuppressed patients. A 54-year-old female presented with a 5-week history of an ulcer which was present on the anterior gingival surface of her lower incisors. The patient subsequently developed an enlarged node in the ipsilateral neck. An array of investigations including histopathological analysis and an ultrasound guided fine-needle aspiration led to a final diagnosis of an Epstein-Barr virus associated mucocutaneous ulcer.

These cases are rare and can present with significant diagnostic and therapeutic challenges to the clinicians due to their rarity, and similarity with other lesions including malignancy. We discuss our case and the relevant literature, with a focus on the challenging decision-making and multidisciplinary input to reach a satisfactory outcome for the patient.

Head and neck squamous cell carcinomas (HNSCCs) are aggressive cancers with high morbidity and low survival rates, as well as limited therapeutic options.

We present the case of a 54-year-old patient, person living with HIV/AIDS (PLWH) who presented with a history of an ulcerating lesion in her soft palate following self-inflicted mucosal insult which later revealed as an invasive squamous cell carcinoma with high grade dysplasia.

The patient underwent chemotherapy and demonstrated remarkable clinical recovery with complete remission of signs and symptoms.

We present a case in which early diagnosis and interdisciplinary collaboration were critical in ensuring a good prognosis for the patient, who is at the moment of writing, asymptomatic.

This systematic review was performed to compare the dermis fat graft (DFG) to the conventional temporalis myofascial flap (TMF) used as Interpositional material in the management of temporomandibular joint ankylosis (TMJA). We searched PubMed, Embase, CENTRAL, clinical trial registries and google scholar. The outcomes of interest were Maximal Incisal Opening (MIO), Post-operative pain and reankylosis. Only four studies met the inclusion criteria. The studies had an overall high risk of bias. Nevertheless, the MIO was higher by 4.485 mm in DFG which was statistically significant (p < 0.01) but heterogenous (I² = 92%). The risk difference of reankylosis was only 3% less in DFG compared to TMF, which was statistically not significant (p = 0.64). The post-operative pain was comparable between the two techniques, with only one study reporting a statistically significant reduction in pain in the DFG group. We found low-quality evidence of statistically significant higher MIO in DFG, but a very low risk difference in reankylosis between the two techniques. Further clinical trials with long-term follow-up are recommended as the total sample and outcome events are very low for a concrete conclusion.

Acinic cell carcinoma (ACC) is a rare, low-grade tumour, accounting for about 17% of all primary salivary gland malignancies in adults. ACC most commonly affects the parotid gland, predominating fifth and sixth decades of life and a female predilection. In the paediatric population, mucoepidermoid carcinoma is the most common parotid malignancy, followed by ACC.

We report a case of a 16-year-old female, presenting with a slow-growing right parotid lump. Clinical examination revealed a small right parotid nodule, grade I House-Brackmann score and cervical lymphadenopathy. Radiological investigations revealed a well-circumscribed lobulated lesion in the anterior right parotid gland and reactive lymph nodes. Surgical management included a right partial parotidectomy. Immunohistochemistry was negative for S100, positive with DOG-1 and widespread PAS-D-resistant granules throughout the tumour cells, confirming a diagnosis of ACC.

ACC is an important differential diagnosis to consider in salivary gland pathology in the female adolescent patient.

Introduction

Following Bell's palsy, 25% of sufferers are left with chronic, difficult to treat involuntary muscle movements (synkinesis). Surface-electromyography (sEMG) biofeedback has an established role in improving muscular coordination. The vestigial posterior auricular muscle (PAM) is the first muscle re-innervated by the facial nerve. This study measured the sEMG signal from PAM in facial animation in healthy subjects and explored the possibility of using PAM in a wearable rehabilitative device.

Material and methods

PAMs activity was recorded using sEMG in 41 healthy volunteers during the performance of a set range of facial expressions. To compare results between participants and expressions, the percentage increase from baseline were used.

Results

PAMs activity increased significantly from baseline in response to smiling (110.98%) compared with other facial expressions: closing eyes (7.85%); blowing out cheeks (39.35%); whistling (11.84%), and showing lower teeth (38.24%). PAMs activity increased in proportion to smile intensity: lips together smile (55.18%); open smile (111.98%); full denture smile (130.07%); and, laughing (269.42%).

Conclusion

This study demonstrates that measurement of smile intensity is possible via the sEMG signal from the PAM. Further studies investigating the applicability of measuring PAM activity during smiling to enhance and guide facial palsy rehabilitation are ongoing.