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Related to apical abscess: apical periodontitis
See: basic, cardinal
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Chronic apical abscess is characterized as an inflammation in the periapical region with formation and discharge of pus slowly through a fistula, recognized as a pathognomonic sign of this lesion.
Clinical, radiographic, and histological observation of a human immature permanent tooth with chronic apical abscess after revitalization treatment.
It was only when the nonsurgical method failed, the surgical procedure was performed to treat peri apical abscess. Bone graft and PRF were placed into the defect for faster enhancement of lesion.
If apical abscess forms, the enhancing rim can be seen on images.
Original differential diagnoses included acute apical abscess and subacute osteomyelitis but after a biopsy the differential diagnoses expanded to myofibroma, lipoma, adenoma, adenocarcinoma, lymphoma and sarcoma.