1 MCQs in Radiology for NEET PG
A 42-year-old man presents with recurrent right-sided painful submandibular swelling that worsens during mealtimes and subsides over 1–2 hours. Bimanual palpation detects a hard stone in Wharton's duct. Trans-cervical ultrasound shows an enlarged right submandibular gland with a dilated main duct. Within the duct lies a hyperechoic focus (marked **A** in the diagram) casting a strong posterior acoustic shadow. Which of the following best explains the pathophysiological basis for the high prevalence of sialoliths in the submandibular gland compared to the parotid gland?
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