Tubular adenoma of the breast

Radswiki et al.

Tubular adenomas (TA) of the breast, also known as pure adenoma of the breast, are a rare benign breast lesion. It is a type of adenomatous breast lesion.

They are typically found in young women and are usually palpated by the patient or her physician.

On gross pathology, tubular adenomas appear as circumscribed masses. Microscopically, they contain closely-approximated tubular structures that vary little in size. These lesions are related to fibroadenomas but can be distinguished by the predominance of epithelium and relative lack of stromal components.

Mammography

While they can a variable appearance, they are typically seen as non-calcified round or oval masses with either well-defined or obscure margin. Because the lesions are typically found in young women, primary imaging is almost always with ultrasound.

Breast ultrasound

There is significant sonographic imaging overlap with a fibroadenoma and differentiation can be impossible. They are typically seen as well defined hypoechoic lesions with relatively well-defined margins. There may be posterior acoustic enhancement.

In practice, these lesions are exceptionally rare. Typically the lesion is expected to likely be a fibroadenoma on biopsy and the diagnosis comes as a bit of a surprise when you get back the histology report. These lesions very rarely show calcification and are almost unknown in postmenopausal women.


Breast imaging and pathology
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Article Information

rID: 15125
System: Breast
Section: Pathology
Synonyms or Alternate Spellings:
  • Tubular adenoma (breast)
  • Tubular breast adenoma
  • Tubular adenoma of the breast
  • Pure adenoma of the breast
  • Pure adenoma of breast
  • Tubular breast adenomas

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