FNA of a pulmonary hamartoma demonstrates a highly distinctive metachromatic matrix, reminiscent of the metachromatic stroma seen in...

History: These images are from a fine needle aspiration biopsy of a lymph node in a patient with lymphadenopathy, joint symptoms, and...

These images are from a fine needle aspiration biopsy of a thyroid nodule. What is your diagnosis? Answer: Medullary thyroid carcinoma. ...