PMC5998165_01
A 12-year-old Brazilian female with a chief complaint of a painless growing facial swelling for 8 months.
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A 12-year-old Brazilian female, with no systemic comorbidities, attended the oral and maxillofacial surgery service with a chief complaint of a painless growing facial swelling for 8 months (Figure 1).
Panoramic radiographic examination revealed a unilocular radiolucent lesion extending from the body of the mandible through to the angle and right ascending ramus.
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Panoramic radiographic examination revealed a unilocular radiolucent lesion extending from the body of the mandible through to the angle and right ascending ramus, causing displacement of the second molar towards the base of the mandible and the third molar towards the ascending ramus (Figure 2).
Incisional biopsy (a). Flexible tube for decompression (b).
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An incisional biopsy was then performed, and the specimen was sent for histological evaluation (Figure 3). In view of the clinical and radiographic characteristics, two differential diagnoses were raised, namely, unicystic ameloblastoma or dentigerous cyst (Figure 3).
The patient has been followed up for 6 months, with no clinical or radiographic evidence of recurrence.
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The patient has been followed up for 6 months, with no clinical or radiographic evidence of recurrence (Figure 4).
Photomicrograph showing ameloblastic epithelium. Hematoxylin and eosin. Original magnification 40x (a). Original magnification 100x (b). Original magnification 200x (c). Original Magnification 400x (d).
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The fibrous capsule consisted of dense connective tissue, presenting moderate to severe lymphoplasmacytic inflammatory infiltrate and hemorrhagic areas (Figure 5).