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mammary hamartoma

Monday 29 May 2006


- Hamartoma of breast consisting of dilated ducts and fibrous stroma.
- A partial capsule is evident.
- The fibrous stroma can have slit-like spaces without endothelial cells, so called "pseudoangioma".

Differential diagnosis: mammary biphasic lesions

- adenomyoepithelioma
- mammary fibroadenomas

  • mammary juvenile fibroadenoma

- mammary hamartoma
- metaplastic mammary carcinoma
- phyllodes tumor
- pleomorphic adenoma
- gynecomastia
- pubertal macromastia

See also

- mammary tumors


- Tse GM, Law BK, Ma TK, Chan AB, Pang LM, Chu WC, Cheung HS. Hamartoma of the breast: a clinicopathological review.
J Clin Pathol. 2002 Dec;55(12):951-4. PMID: 12461066

- Tse GM, Law BK, Pang LM, Cheung HS. Ductal carcinoma in situ arising in mammary hamartoma. J Clin Pathol. 2002 Jul;55(7):541-2. PMID: 12101205

- Kuroda N, Sugimoto T, Numoto S, Enzan H. Microinvasive lobular carcinoma associated with intraductal spread arising in a mammary hamartoma. J Clin Pathol. 2002 Jan;55(1):76-7. PMID: 11825932

- Coyne J, Hobbs FM, Boggis C, Harland R. Lobular carcinoma in a mammary hamartoma. J Clin Pathol. 1992 Oct;45(10):936-7. PMID: 1430271

- Petrik PK. Mammary hamartoma. Am J Surg Pathol. 1987 Mar;11(3):234-5. PMID: 3826483