Some of submitted fragments (slide A) showing wall of cyst is lined by parakeratinized stratified squamous cells 5-8 layers in thickness with palisading of the prominent basal layer. Wall of cyst shows focal superficial ulceration with related inflammatory reaction rich in neutrophils, lymphocytes, plasma cells and macrophages. This inflammation extending to surrounding bony tissue. No evidence of atypia or malignancy.
Rt. lower jaw lesion extending from the body to right condylar head. ? Osteomyelitis.
Membranous and bone fragments collectively measured 6x5x1 cm, totally embedded.
Rt. Lower jaw lesion: