A clinical study of submandibular schwannoma

Current Diagnostics and management of submandibular space schwannoma: a systematic review

BACKGROUND

Submandibular space schwannomas (SSS) are rare tumors originating from the neural sheath in the submandibular region with varied prognoses.

OBJECTIVE

The primary objective was to evaluate the current diagnostic and management outcomes of SSS.

MATERIAL AND METHODS

PubMed, Embase, Science Direct, and Web of Science were reviewed for articles from inception through January 2025. Fisher's test was used to calculate the difference in outcomes between extraglandular (EG) and intraglandular (IG) subtypes.

RESULTS

A total of 44 studies with 47 patients were included with a mean age (SD) of 42.8 (19.3) years. Hypoglossal nerve (43.3%) and lingual nerve (36.6%) were the primary nerve of origin for SSS, with significantly higher rates of hypoglossal nerve origin in EG-SSS than IG-SSS (p = .008). Sensitivity analysis of preoperative biopsy showed higher sensitivity rates with core biopsy compared to fine-needle aspiration cytology (FNAC) (85.7% vs. 38.7%) in SSS diagnosis. IG schwannomas are more likely to undergo submandibular gland excision (p = .002) than EG schwannoma.

CONCLUSION

Core biopsy demonstrated superior sensitivity compared to FNAC, establishing it as the preferred diagnostic tool. The hypoglossal nerve was the most identified nerve of origin.

SIGNIFICANCE

This review offers a comprehensive insight into the preoperative and perioperative management of SSS subtypes for surgeon decisions.

A Rare Case of Submandibular Neurilemmoma Inducing Submandibular Gland Sialolithiasis

Most sialolithiasis occurs in the submandibular glands, which are highly related to the anatomy and secretory function of the submandibular glands. The authors report an 18-year-old patient with multiple submandibular gland duct stones combined with submandibular neurilemmoma. The course of diagnosis and treatment is highlighted, and the causes of the formation of multiple stones in this patient are analyzed.

Lingual nerve revisited-A comprehensive review Part II: Surgery and radiology

The lingual nerve (LN) is a branch of the mandibular division of the fifth cranial nerve, the trigeminal nerve, arising in the infratemporal fossa. It provides sensory fibers to the mucous membranes of the floor of the mouth, the lingual gingiva, and the anterior two-thirds of the tongue. Although the LN should rarely be encountered during routine and basic oral surgical procedures in daily dental practice, its anatomical location occasionally poses the risk of iatrogenic injury. The purpose of this section is to consider this potential LN injury risk and to educate readers about the anatomy of this nerve and how to treat it.

Solitary Submandibular Schwannoma Mimicking a Salivary Gland Tumor in a Child

Tumors occurring in the submandibular space are infrequent among pediatric patients, and benign peripheral nerve tumors in this region are exceptionally rare. This study describes the uncommon occurrence of a schwannoma in the submandibular space in a child and describes its management. A 7-year-old child presented with a gradually enlarging swelling over a 7-month period in the submandibular region, clinically resembling a salivary gland tumor. There were no associated marginal mandibular, lingual, or hypoglossal nerve palsy. The mass was excised completely, and histopathological examination revealed it to be a schwannoma. It is appropriate to consider benign peripheral nerve tumors, such as schwannoma, in the differential diagnosis of submandibular space tumors in children.

Multiple Schwannomas Arising in the Midline Space Between the Bilateral Genioglossus Muscles and Left Submandibular Space

Schwannomas mostly occur as solitary tumors, and multiple schwannomas are very rare. Schwannomas in the submandibular space are extremely rare. Furthermore, schwannomas in the midline space between the bilateral genioglossus muscles are even rarer. We report multiple schwannomas arising in the midline space between the bilateral genioglossus muscles and left submandibular space. Because the common differential diagnosis of the midline deep sublingual lesions does not include schwannoma for the rarity, surgeons should consider schwannoma in the differential diagnosis.