American Journal of Medical Case Reports
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American Journal of Medical Case Reports. 2022, 10(12), 307-310
DOI: 10.12691/ajmcr-10-12-3
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Novel Pseudoangiomatous Stromal Hyperplasia Mass in a Breast Hamartoma: A Case Report

Beau Doerr1, , Shemar Crawford2, Brian Nykanen2 and Cole Burr3

1Touro College of Osteopathic Medicine - Middletown Campus, 60 Prospect Ave, Middletown, NY, 10940

2Florida State College of Medicine, 1115 W Call Street, Tallahassee, FL, 32304

3Department of Radiology, Tripler Army Medical Center, 1 Jarrett White Road, Honolulu, HI, 96859

Pub. Date: December 12, 2022

Cite this paper:
Beau Doerr, Shemar Crawford, Brian Nykanen and Cole Burr. Novel Pseudoangiomatous Stromal Hyperplasia Mass in a Breast Hamartoma: A Case Report. American Journal of Medical Case Reports. 2022; 10(12):307-310. doi: 10.12691/ajmcr-10-12-3


Breast fibroadenolipomas, otherwise known as hamartomas, are a relatively rare finding in regard to the occurrence of breast masses. Breast hamartomas make up approximately 4.8% of benign breast tumors in women. Breast hamartomas are uncommon, and our case presents with a 4.7 cm hamartoma with a focal, irregular mass inside of it which was histologically confirmed as pseudoangiomatous stromal hyperplasia (PASH). PASH is a benign mesenchymal lesion of the breast that is characterized by dense collagenous stroma forming “pseudoangiomatous” capillary-like spaces lined by spindle cells. [1] A rare condition overall, PASH is predominately discovered in premenopausal women, with fewer than 1,500 cases of PASH documented in literature [1]. Therefore, our case presentation describes a combination of two relatively rare phenomena within one palpable breast mass. Due to the absence of symptoms, the patient was scheduled for interval follow up to monitor the breast hamartoma for interval change in size, and definitive treatment by elective surgical excision was offered if accompanying symptoms developed.

breast hamartoma breast mass pseudoangiomatous stromal hyperplasia ultrasound mammography

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