Treatment

Under IV sedation, tooth # 32 was removed and the cavity curetted and thoroughly irrigated.  The soft tissue was in form of a sac surrounding the crown of tooth #32.  The area healed without any events. 

Incisional and excisional biopsy

The biopsy specimen was read by Dr. Thomas Morton at the Oral Pathology Biopsy Service, University of Washington.  Histological examination revealed a cystic structure lined by epithelium and supported by fibrous connective tissue wall (Figures 2 & 3).  The lining epithelium is non-keratinized stratified squamous in type (Figure 3).  The connective tissue wall comprises the bulk of the specimen is cellular in some areas and fibrotic in others.  It contains a few lymphocytes, plasma cells and neutrophils.  It also contains small aggregates of hemosiderin pigment.    

 

Figure 2 Low power (x100) histology shows a cystic structure lined by non-keratinized stratified squamous epithelium and supported by a thick connective tissue wall infiltrated by a few acute and chronic inflammatory cells. It also contains clusters of hemosiderin pigment.

 

Figure 3 Higher power (200) histology shows the lining epithelium, connective tissue wall, inflammatory cells and hemosiderin pigment at a closer magnification.