Developmental salivary gland depression in the ascending mandibular ramus: A cone-beam computed tomography study

Abstract

A static, unilateral, and focal bone depression located lingually within the ascending ramus, identical to the Stafne's bone cavity of the angle of the mandible, is being reported. During development of the mandible, submandibular gland inclusion may lead to the formation of a lingual concavity, which could contain fatty tissue, blood vessels, or soft tissue. However, similar occurrences in the ascending ramus at the level of the parotid gland are extremely rare. Similar cases were previously reported in dry, excavated mandibles, and 3 cases were reported in living patients. A 52-year-old African American male patient was seen for pain in the mandibular teeth. Panoramic radiography showed an unusual concavity within the left ascending ramus. Cone-beam computed tomography confirmed this incidental finding. The patient was cleared for the extraction of non-restorable teeth and scheduled for annual follow-up.

Parotid mandibular bone defect: A case report emphasizing imaging features in plain radiographs and magnetic resonance imaging

“…To our knowledge, only 7 cases of parotid MBD have been previously described in the literature. 8 17 19 20 21 22 23 …”

“…The differential diagnosis of MBD should include aneurysmal bone cyst, traumatic bone cyst, benign tumors of the salivary gland, lipoma, salivary gland hypertrophy, 17 non-ossifying fibroma, brown tumor of hyperparathyroidism, osteoporotic bone marrow defect, giant cell tumor, multiple myeloma, eosinophilic granuloma, and metastatic disease. 3 15 Fatty tissue deposition, blood vessels, and soft tissue deposition should also be considered.…”

“… 2 16 Parotid gland depressions at the mandibular ramus are infrequently observed. 2 17 MBDs can present, also in decreasing frequency, as unilateral, bilateral, 2 or multiple depressions, 6 and they usually are discovered incidentally in routine radiographic examinations due to their lack of symptoms. 2 5 6 Although MBDs are benign, the identification of the traditional MBD (inferior to the mandibular canal in the mandibular body) is critical to dental practitioners; unusual variants in the ascending ramus lead to even more concerns 2 17 because their radiographic features can resemble various intrabony neoplastic lesions.…”

Lingual mandibular bone defect: imaging features in panoramic radiograph, multislice computed tomography and magnetic resonance imaging

“…Imaging diagnostic hypothesis in panoramic radiographs and MCT of MBDs should include benign and malignant jaw lesions [20], such as aneurysmal bone cyst [28], traumatic bone cyst, ameloblastoma [20], benign tumors of the salivary gland, lipoma, salivary gland hypertrophy [28], non-ossifying fibroma, brown tumor of hyperparathyroidism, osteoporotic bone marrow defect, giant cell tumor, multiple myeloma, eosinophilic granuloma, metastatic disease [1,3] and basal cell nevus syndrome [20].…”

A Rare Variant of the Stafne Bone Cavity Localized to the Subcondylar Region of the Mandible: A Case Report with Review of the Literature

“…Although the most common location is the medial surface of the posterior mandible in the region of the submandibular gland fossa, 1,3,4 Philipsen et al (2002) English world medical and dental literature. [9][10][11][12][13][14][15][16][17][18][19] In a study by Sisman et al 3 Author Disclosure: None Declared.…”