Читать книгу Handbook of Oral Pathology and Oral Medicine - S. R. Prabhu - Страница 133

 Apical periodontitis:Usually, no significant changes seenOccasionally, lamina dura may show haziness or slightly wide periodontal space

 Periapical granuloma:Presents as a radiolucent lesionA radiolucent lesion of a few millimetres in size is usually indistinguishable from a periapical cystAn affected tooth typically reveals loss of the apical lamina duraRoot resorption is not uncommonA radiolucent lesion associated with the root apex often has fuzzy borders (Figure 3.2a)Figure 3.2 Periapical granuloma. (a) Radiolucent lesion of periapical granuloma at the root apex of the non‐vital lateral incisor. (b) Photomicrograph showing apical connective tissue (black star) with chronic inflammatory cells and proliferating epithelial cells. Microscopic features demonstrate an evolving periapical cyst arising from periapical granuloma(source: by kind permission of Associate Professor Kelly Magliocca, Department of Pathology and Laboratory Medicine, Winship Cancer Institute at Emory University, Atlanta, GA, USA).(c) This photomicrograph shows cholesterol clefts and multinucleated giant cells in a mature periapical granuloma. These features are similar to those of periapical cyst.