ABSTRACT
Ossifying fibroma is a rare benign tumor of the nasal cavity and the paranasal sinus, and is easily misdiagnosed. In the present study, we report the clinical data in the case of a 46-year-old female patient, treated due to 5-day forehead swelling accompanied by dizziness. CT examination revealed dilation of the right frontal sinus, bone wall integration, dense masses in the cavity, multiple punctate calcification foci internally and no nasal obstruction, nasal mucus or epistaxis. After hospitalization, a right frontal sinus fenestration and tumor resection plus nasofrontal duct reconstruction combined with nasal endoscopic frontal recess open surgery was conducted under general anesthesia. Following the tumor resection, the frontal sinus bone lamella was reset and fixed with a titanium bone fixation set. The postoperative pathological diagnosis was of ossifying fibroma. At the postoperative 5-year follow-up there was no tumor recurrence and nasal endoscopy revealed an unobstructed nasofrontal duct opening.
ABSTRACT
OBJECTIVE: To observe the injury and repair of the subepithelial cordectomy by CO2 laser in different power. METHODS: Thirty dogs were randomly divided into 5 groups according to different laser power such as A(1 W), B(3 W), C(5 W), D(8 W), E(cold instruments), 6 dogs in each group. Subepithelial cordectomy was performed on the dogs and the tissue damage and wound recovery were observed in different time after operation. RESULTS: The mucosa reaction in group C, D was heavier than those in group A, B, E, and the wounds healed slowly with visible pathological scars. The densities of fibroblast and blood capillary were determined with optical microscope. It was found that those in group C, D were higher than those in group A, B, E. The difference was statistically significant (average P < 0.05). Observation by electron microscope showed that the injuries were lighter in group A, B, E and there was no significant difference in vocal cord repair process, while the injuries were more serious in group C, D with few elastic fibers in lamina propria and collagen fibers increased significantly after vocal cord repairing. CONCLUSIONS: The tissue repair after subepithelial cordectomy by CO2 laser with low power (1 - 3 W) was similar to that by cold instrument surgery.
