An Extrafollicular Adenomatoid Odontogenic Tumor Mimicking a Periapical Cyst

Figure 3

(a) On gross examination the lesion appears as an elliptical tissue, with 3.5 × 2.7 cm diameter. Cut section reveals a solid mass with multiple cystic spaces. (b) Low power view demonstrating a thick capsule surrounding the tumor (×40). (c) Duct-like structures which are the characteristic feature of AOT indicated by yellow arrow (400). (d) Spindle shaped cells that form whorled masses and rosette-like structures are noticeable (×400).

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