case_images: PMC5443997_01
case_images: An image of the oral cavity obtained during the initial examination showing a painless mass in the lower right premolar region.
case_images: CRIPA2017-7031414.001.jpg
case_images: PMC5443997_01_CRIPA2017-7031414.001.jpg
case_images: fig1
case_images: A 40-year-old male patient presented to our hospital with a complaint of swelling in the right lower premolar region (Figure 1). During a clinical examination, a firm swelling of the right mandibular alveolar ridge, which extended from the lateral incisor to the second premolar, was observed (Figure 1).
case_images: A panoramic radiograph showing a well-defined large radiolucent lesion in the right mandible.
case_images: CRIPA2017-7031414.002.jpg
case_images: PMC5443997_01_CRIPA2017-7031414.002.jpg
case_images: fig2
case_images: A panoramic radiograph revealed a radiolucent lesion with a well-defined border and root displacement of the canine and first premolar without root resorption (Figure 2).
case_images: (a) Axial and (b) coronal computed tomography scans showing a large unilocular radiolucent lesion in the right mandible.
case_images: CRIPA2017-7031414.003.jpg
case_images: PMC5443997_01_CRIPA2017-7031414.003.jpg
case_images: fig3
case_images: Computed tomography of the lesion showed a predominantly lytic expansile unilocular lesion measuring 40 x 35 x 35 mm (Figure 3).
case_images: The surgical specimen had a gourd-like shape, and its cross section contained a solid portion and a cystic lesion (arrow).
case_images: CRIPA2017-7031414.004.jpg
case_images: PMC5443997_01_CRIPA2017-7031414.004.jpg
case_images: fig4
case_images: The enucleated sample was firm and had an irregular shape, and its cut surface was solid, whitish, and partially cystic (Figure 4).
case_images: (a) A histopathological image showing a mixture of follicular and desmoplastic ameloblastoma. (x10) (b) A histopathological image showing stellate-shaped epithelial islands together with squamous metaplasia in the collagenized fibrous stroma containing connective tissue. (x40) (c) A histopathological image showing typical follicular ameloblastoma together with cystic degeneration and squamous metaplasia (x40).
case_images: CRIPA2017-7031414.005.jpg
case_images: PMC5443997_01_CRIPA2017-7031414.005.jpg
case_images: fig5
case_images: In addition, areas of cystic degeneration and squamous metaplasia were also seen (Figure 5).
case_images: (a) A panoramic radiograph obtained just after the operation showing a well-defined large unilocular radiolucent lesion in the right mandible. (b) A panoramic radiograph and (c) axial and (d) coronal computed tomography obtained at 22 postoperative months showing that the radiopaque area had increased in size.
case_images: CRIPA2017-7031414.006.jpg
case_images: PMC5443997_01_CRIPA2017-7031414.006.jpg
case_images: fig6
case_images: The patient's postoperative course was uneventful, and a follow-up review conducted at 22 postoperative months showed no evidence of recurrence (Figure 6).