A "J-shaped" radiolucency extending from the apex along the root is characteristic of which condition?

Vertical root fractures classically produce a J-shaped or halo-shaped radiolucency that wraps from the apex up along one side of the root because infection drains along the fracture line. Other signs: isolated deep probing depth at the fracture site, sinus tract at or near the gingival margin, and lateral PDL radiolucency. Treatment is usually extraction.7. Oral Surgery & Local Anesthesia