Breast Health Navigator Certification Practice Exam 2026 – Complete Preparation Guide

PASH stands for Pseudoangiomatous Stromal Hyperplasia. This condition is characterized by the proliferation of stromal cells in the breast, which can present with pseudoangiomatous features on histological examination. It often mimics vascular lesions due to the presence of elongated, slit-like spaces that can resemble blood vessels, but these structures are not true vessels and do not contain blood.

PASH is generally considered a benign condition, though it can sometimes be mistaken for other pathologies. Understanding the nature of PASH is important for healthcare professionals, as it aids in the correct diagnosis and management of breast conditions. Awareness of the histological features and clinical implications of PASH contributes to more effective treatment planning and patient education.