Medical Emergencies · patient case question
Regarding the firm nodular mass on the lateral border of his tongue, each of the following belongs in the differential diagnosis EXCEPT one. Which is the EXCEPTION?
Patient case: COPD, a Black Tongue, and a Lateral Tongue Mass
Patient: 58-year-old male
Chief Complaint: “My tongue looks black and furry, and there’s a lump on the side of it.”
Background: Chronic obstructive pulmonary disease, GOLD stage III. 40 pack-year smoking history and still smoking one pack daily. Uses a chlorhexidine rinse intermittently. No cardiovascular disease.
Medications: Albuterol inhaler PRN · Tiotropium daily · Inhaled fluticasone
Vital Signs: BP 130/78 mmHg · HR 88 bpm · RR 22 · SpO₂ 92% on room air · T 98.4°F
Findings: Barrel chest, pursed-lip breathing, prolonged expiration. Dorsal tongue with markedly elongated, brown-black filiform papillae. A separate firm, nodular, exophytic mass approximately 15 mm across on the left lateral tongue, present for several months and slowly enlarging. Extensive restorative needs across three quadrants.
Show answer and explanation
Correct answer: A. Nicotinic stomatitis
- A. Correct — this is the exception. Nicotinic stomatitis is a diffuse white change of the hard palate with red inflamed minor salivary duct openings, caused by heat rather than by the chemical constituents of tobacco. It is confined to the palate and never presents as a discrete tongue nodule.
- B. Incorrect — this belongs in the differential. Schwannoma is a benign nerve sheath tumor that presents as a firm, well-circumscribed, slow-growing submucosal nodule, with the tongue its most common intraoral site.
- C. Incorrect — this belongs in the differential. Traumatic fibroma is the most common reactive soft tissue nodule of the oral cavity and readily occurs on the lateral tongue where it is caught between the teeth.
- D. Incorrect — this belongs in the differential. Granular cell tumor is a benign lesion of Schwann cell origin with a strong predilection for the dorsal and lateral tongue, and is classically associated with pseudoepitheliomatous hyperplasia of the overlying epithelium.
Note: Do not lose sight of the clinical priority. In a 40 pack-year smoker, any persistent enlarging mass on the lateral or ventral tongue — the highest-risk intraoral site — must be biopsied to exclude squamous cell carcinoma, whatever the benign possibilities.
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