title: Pseudoangiomatous stromal hyperplasia (PASH) of the mammary gland: report of a case.
abstract: Pseudoangiomatous stromal hyperplasia (PASH) is an uncommon benign breast disease. Pseudoangiomatous stromal hyperplasia is characterized by a collagenous proliferation of mammary stroma, associated with capillary-like spaces. We herein report the case of a 48-year-old woman who presented with a huge mass in her right breast. Physical examination revealed a 20 x 23-cm mass, which was surgically excised. Histopathologically, the tumor was composed of abundant fibrous stroma containing non-vascular slit-like spaces and scattered ducts and lobules. Neither stromal nor epithelial cells showed atypia. We therefore diagnosed the tumor to be PASH.
authors: Department of Surgery, Akita Red Cross Hospital, Akita, Japan.
authors: Yasuhiro
authors: Y
authors: Sasaki
authors: Shuichi
authors: S
authors: Kamata
authors: Ken
authors: K
authors: Saito
authors: Yuji
authors: Y
authors: Nishikawa
authors: Jun-ichi
authors: J
authors: Ogawa
mesh_terms: D000798:Angiomatosis / Q000000981:diagnostic imaging / Q000473:pathology*; D044963:Biopsy, Fine-Needle; D001940:Breast / Q000473:pathology*; D001941:Breast Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D049109:Cell Proliferation; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D008327:Mammography; D008875:Middle Aged; D017154:Stromal Cells / Q000473:pathology*; D014057:Tomography, X-Ray Computed