Contrast‐Enhanced Ultrasound in the Diagnosis of Parotid Gland Castleman Disease in a Child
Sruthilatha Sakthi Velavan, Shanelle De Lancy, Diane W. Chen, Boaz KarmazynABSTRACT
Castleman disease is a rare lymphoproliferative disorder that infrequently involves the parotid gland. We report a 16‐year‐old girl with a 3‐year history of slowly progressive, painless right cheek swelling. CT and MRI showed an avidly enhancing, markedly T2‐hyperintense parotid lesion, suggesting a vascular malformation; fine‐needle aspiration yielded reactive lymphoid tissue. Contrast‐enhanced ultrasound (CEUS) demonstrated rapid, intense, homogeneous enhancement, confirming a hypervascular solid mass rather than a vascular malformation and raising suspicion for Castleman disease. Superficial parotidectomy confirmed unicentric hyaline‐vascular Castleman disease. CEUS aided differentiation of a hypervascular solid lesion from a vascular malformation and narrowed the differential.