Fine needle aspiration of alveolar soft part sarcoma in a child: Cytomorphological clues for the surgical pathologist

Alveolar soft part sarcoma (ASPS) is a rare soft tissue neoplasm generally affecting adolescents and young adults. Its unique histologic and ultrastructural features have been well-described; however, the cytopathological features of ASPS are less well-characterized, and recognition of this entity's features on cytologic preparations can ensure that the specimen adequacy and appropriate/rapid tissue allocation for additional testing. Herein we report a FNA case of ASPS with emphasis on cytomorphologic characteristics.