“…In the diagnostic image, you can see intracystic floating corpuscles that contain lipids (i.e., the sack of marble sign). These are pathognomonic for dermoid cysts and usually hypodense on CT, hyper/hypo intense on T1-weighted MRI, and hypointense on T2-weighted MRI, although cystic hygroma, branchial cleft cyst, sublingual ranula, and benign and malignant tumors of the mouth are all considered as radiological differential diagnosis of dermoid cyst [27,28]. Because of these marbles, a percutaneous fine needle aspiration may not be recommended.…”