Oral Pathology and Radiology Flashcards
7 cards from real NBDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Oral Pathology and Radiology flashcards as text
Oral submucous fibrosis, a potentially malignant disorder, is strongly associated with the habit of:
Answer: Areca nut (betel quid) chewing
Areca nut (betel quid) contains arecoline, which stimulates fibroblasts to produce excess collagen, causing progressive submucosal fibrosis and trismus.
Stafne bone cavity (static bone cyst) characteristically appears on a panoramic radiograph as:
Answer: Well-defined unilocular radiolucency below the inferior alveolar canal near the mandibular angle
Stafne bone cavity is a developmental corticated depression in the posterior mandible lingual cortex below the inferior alveolar canal, filled with submandibular gland tissue.
A Wickham's striae pattern on buccal mucosa with white lace-like striations is pathognomonic of:
Answer: Lichen planus
Wickham's striae — interlacing white lines on a violaceous background — are the hallmark of oral lichen planus, representing saw-tooth rete pegs and band-like lymphocytic infiltrate.
On a periapical radiograph, which structure appears as a radiopaque line at the midline of the palate just superior to the anterior teeth?
Answer: Median palatal suture
The median palatal suture appears as a thin radiopaque midline line between the two palatine processes of the maxilla, superior to the central incisors.
Which of the following salivary gland tumors is most likely to undergo malignant transformation?
Answer: Pleomorphic adenoma
Pleomorphic adenoma (mixed tumor) has a 1-5% risk of malignant transformation to carcinoma ex pleomorphic adenoma, especially with long-standing or recurrent lesions.
Fordyce granules of the oral cavity represent:
Answer: Ectopic sebaceous glands in the oral mucosa
Fordyce granules are ectopic sebaceous glands without hair follicles, appearing as multiple small yellow-white papules on the buccal mucosa and vermilion border.
A 'sunburst' periosteal reaction on a jaw radiograph in a child is most alarming for:
Answer: Osteosarcoma
A sunburst periosteal reaction (perpendicular bone spicules radiating from the cortex) is a classic sign of osteosarcoma, reflecting aggressive periosteal bone formation.