Apr 17, 2024 · Breast - Pseudoangiomatous stromal hyperplasia is a benign stromal myofibroblastic proliferation forming clefts, simulating a vascular lesion

Breast nonmalignant and malignant

Oct 15, 2025 · Pseudoangiomatous stromal hyperplasia (PASH): Empty, anastomosing spaces within collagen Usually not mass forming Rb1 positive by immunohistochemistry and lacks del …

May 9, 2022 · Hamartoma is a well circumscribed, often encapsulated mass composed of normal but disorganized components of breast tissue

Jul 15, 2022 · PAS (Periodic acid-Schiff) is a special stain, not an immunostain, that stains basement membrane (normal and in tumors), glycogen, some mucins and mucopolysaccharides

Nov 23, 2021 · Hidradenitis suppurativa is a chronic inflammatory disorder of pilosebaceous apocrine unit characterized by nodules, abscesses, fistulae and sinus tracts with scarring that …

Mar 28, 2022 · Fibromatosis-like metaplastic carcinoma is a variant of metaplastic carcinoma with low grade, bland, spindle cells histologically resembling fibromatosis

Jan 16, 2024 · Atypical lobular hyperplasia (ALH) is a clonal proliferation of discohesive epithelial cells arising in terminal duct lobular units

Jul 19, 2021 · Breast nonmalignant - Fibroadenoma is a benign biphasic tumor composed of a proliferation of both glandular epithelial and stromal components of the terminal duct lobular unit

Dec 16, 2024 · May contain stromal fascicular PASH-like pattern with nuclear palisading Differentiating features, if present Benign epithelial component with intracanalicular, …