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Swelling in Lower Jaw

Swelling in Lower Jaw

  • 60-year-old female presented with complaint of swelling over left mandible
  • Figure 1. Shows expansile lytic multiloculated lesion involving mandible body on left.
  • Figure 2. Shows expansile lytic multiloculated lesion involving mandible body on left.
  • Figure 3. Shows expansile lytic multiloculated lesion involving mandible body on left.
  • Figure 4. Shows expansile lytic multiloculated lesion involving mandible body on left.
  • Figure 5. Shows expansile lytic multiloculated lesion involving mandible body on left.
  • Ameloblastoma is classically seen as a multiloculated (80%), expansive "soap-bubble" lesion, with well-demarcated borders and no matrix calcification.
  • On MRI, ameloblastomas demonstrate a mixed solid and cystic pattern, with a thick irregular wall, often with solid papillary structures projecting into the lesion.
  • Ameloblastomas are benign, locally aggressive tumors that arise from the mandible, or less commonly from the maxilla.
  • Ameloblastomas are the second most common odontogenic tumor (odontoma is the most common) and account for up to one-third of such cases.
  • Ameloblastomas typically occur as hard painless lesions near the angle of the mandible in the region of the 3rd molar tooth.
  • Unsurprisingly, ameloblastomas arise from ameloblasts, which are part of the odontogenic epithelium, responsible for enamel production and eventual crown formation.
  • Ameoloblastomas tend to be treated by surgical en bloc resection.
  • Malignant behavior is seen in two forms.
  • General imaging differential diagnosis includes dentigerous cyst.

Case History: A 60-year-old female presented with complaint of swelling over left mandible.

Comments

Osteonecrois because of biphosphonate therapy for osteoporosis

anees @

Adamantinoma.

Giuseppe Francesco @

If history of osteoporosis therapy, think bi-phosphonate osteonecrosis.

herbert @

Well described.

Ganapathy @

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