Pathology · patient case with 3 questions
Post-Extraction Sinus Findings
demo: 52-year-old male
chief: Extraction of a non-restorable maxillary first molar.
history: Chronic nasal congestion and post-nasal drip for two years. Non-smoker.
meds: None
findings: After extraction of #14, soft tissue was retrieved from the socket and submitted for histopathology. The report describes pseudostratified ciliated columnar epithelium with a chronic inflammatory infiltrate.
Question 1
What does this histologic description represent?
Show answer and explanation
Correct answer: D. Schneiderian (maxillary sinus) membrane with chronic sinusitis
- A. OKC lining is parakeratinized stratified squamous with a palisaded basal layer and a corrugated surface.
- B. Oral mucosa is stratified squamous, not pseudostratified columnar.
- C. A mucocele is a pool of extravasated mucin surrounded by granulation tissue, not ciliated respiratory epithelium.
- D. Correct. Pseudostratified ciliated columnar epithelium is respiratory epithelium. In a maxillary molar socket it indicates that the sinus lining was retrieved — an oroantral communication — and the chronic infiltrate indicates coexisting chronic sinusitis.
Question 2
Which immediate clinical test is most appropriate to confirm the suspicion raised by this finding?
Show answer and explanation
Correct answer: A. Nose-blowing (Valsalva) test with observation of the socket
- A. Correct. Gentle Valsalva with the nostrils pinched will produce bubbling or air passage through an oroantral communication.
- B. Pulp testing gives no information about the integrity of the sinus floor.
- C. Blind aspiration risks enlarging the defect and inoculating the sinus.
- D. Percussion is uninformative in a fresh extraction socket and merely causes discomfort.
Question 3
An oroantral communication of less than 2 mm in a patient with an otherwise healthy sinus is best managed by:
Show answer and explanation
Correct answer: B. Conservative measures — clot preservation, sinus precautions, and follow-up
- A. Long-term packing keeps the tract epithelialized and encourages a permanent fistula.
- B. Correct. Small communications under about 2 mm usually close spontaneously if the clot is preserved and the patient follows sinus precautions — no nose blowing, no straws, no smoking.
- C. Flap closure is reserved for larger defects, generally 5 mm or more, or for persistent communications.
- D. Caldwell-Luc is a major antrostomy procedure reserved for chronic sinus disease, not a small fresh communication.