###### Abstract  
Cone-beam computed tomography (CBCT) remains the diagnostic modality of choice. The involvement of the cortical bone and adjacent teeth can be easily established via CBCT. Magnetic resonance can be helpful in the estimation of any other soft-tissue tumour spread within this anatomical area. The soft, hard-tissue, or mixed aetiology of tumours requires a differential diagnosis and accurate evaluation. If such pathologies arise, an adequate biopsy or incisional biopsy is essential to evaluate the type of tumour histopathologically. The occurrence of some neural tumours in the oral cavity is rare. Schwannomas (SCs), like some neuromas and other types of neural tumours, are rare and atypical. During clinical examination, a smooth, sponge-like, elastic mass could indicate other small salivary gland tumours rather than an oral neural tumour. Such pathologies of neural origins are quite rare and are uncommon findings in the oral cavity; therefore, their appearance may be conflated with other more typical benign or malignant tumours in the oral cavity. Establishing the status of bone via CBCT, the tooth involvement and the composition of the cortical bone may be helpful for establishing the best treatment of choice. The presented case report describes a rare schwanoma localised at the mandibular retromolar trigone. m 2024  
anatomical variations such as a bifid mandibular canal or a retromolar foramen [4]. On the medial side of the MRT, the lingual nerve might also be found. Many odontogenic cysts and mandibular fractures are often observed in this anatomical area, as are some odontogenic tumours, as well as other pathologies that may be present (e.g., pleomorphic adenoma or others) [4; 5]. Both odontogenic and nonodontogenic pathologies can be found in this mandibular area. One of the rarest tumours found in the oral cavity is a neural tumour (<0.3-1%); therefore, care should always be taken to differentiate between lesions of odontogenic (crystals, tumours, abscesses, primary bone tumours) and nonodontogenic origins (salivary glands, secondary/metastatic tumours, oral cancers, squamous cell carcinomas), and other benign/malignant processes [4; 5; 6]. The schwannoma (SC, neurilemmoma, a Schwann cell tumour) is a rare neuroctedoral tumour arising in the oral cavity [4; 5; 6; 7]. The first descriptive cases of the SC came in 1910, and the SC was described later by [PERSON] in 1935. They are common in middle-aged adults (30-50 years of age), without any sex or age predilection. This rare solitary tumour is mostly a slow-growing, nontender rubbery mass that is asymptomatic, covered with the normal oral mucosa, and found accidentally in the oral cavity [7; 8]. When present, its benign neurogenic origin is mostly associated with the presence of Schwann cells in the nerve sheath of the oral cavity. Currently, the SC is considered an atypical, benign tumour with well-defined borders and is a slow-growing encapsulated tumour arising from the local nerve trunk. Its malignant transformation is unlikely to occur. It might arise from various nerves; however, its occurrence is uncommon in the oral cavity (<1%), while approximately 20-40% of each SC might be found in the head and neck region. In the oral cavity, SCs are mostly associated with submucosal painless swelling and can be smooth and soft upon examination [9; 10]. Oral mucoele, granuloma, lipoma, fibroma, small salivary gland tumours, sarcoma, carcinoma, leiomyoma, rhabdomyoma, haemangioma, lymphangioma, granular cell tumour, and others, such as dermatoid cysts in the oral cavity floor, can be misdiagnosed. Atypically, it can be hard on palpation, mimicking a small salivary gland tumour. Because schwannomas arise from nerve sheets, their histopathological features include those of neuromas, neurofibromas, and tumours arising from bone, muscle, and adjacent soft tissues [7; 8; 9]. Surgical excision is the treatment of choice; however, recurrent SCs require more aggressive excision.