"Cannon Ball" or "Wrecking Ball" is a classic (but definitely NOT a specific) cytological feature of "Metastatic Breast Ductal Carcinoma" in serous effusions. (Cytospin prep, 2nd photo from Chiang Mai, Thailand)
60-year-old man with an incidental mediastinal mass. What is the diagnosis?
A) True thymic hyperplasia
B) Thymic follicular hyperplasia
C) Thymoma β Type AB
D) Micronodular thymoma with lymphoid stroma
#Pathology#PathTwitter