Are phyllodes tumors bad?

Do phyllodes tumors need to be removed?

Phyllodes tumors rarely spread to the underarm lymph nodes, so in most cases it is not necessary to remove any of them. Malignant phyllodes tumors are rare. In cases of malignant phyllodes tumors that have not spread outside the breast, radiation may be used.

How common are phyllodes tumors?

Phyllodes tumors of the breast are rare, accounting for less than 1% of all breast tumors. The name “phyllodes,” which is taken from the Greek language and means “leaflike,” refers to that fact that the tumor cells grow in a leaflike pattern. Other names for these tumors are phylloides tumor and cystosarcoma phyllodes.

Can benign phyllodes turn malignant?

Most phyllodes tumors are benign, but in rare cases they can be malignant (cancerous). In addition, their behavior is unpredictable. In rare cases, a benign tumor can recur (grow back) as a cancer.

Can phyllodes tumor be cured?

Breast-conserving surgery (lumpectomy or partial mastectomy), in which part of the breast is removed, is typically the main treatment. Phyllodes tumors can sometimes come back in the same place if they’re removed without taking enough of the normal tissue around them.

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Do phyllodes tumors stop growing?

Outlook for Phyllodes Tumors

Your outlook is excellent if you had a benign tumor removed with surgery. Treatment often cures malignant phyllodes tumors, but they’re more likely to grow back. They can spread beyond your breast to your lungs.

How fast do phyllodes tumors grow?

Phyllodes tumors tend to grow quickly, within a period of weeks or months, to a size of 2-3 cm or sometimes larger. This rapid growth does not automatically mean the phyllodes tumor is malignant; benign tumors can grow quickly, too. The lump is usually not painful.

What percentage of phyllodes tumors are malignant?

Reports have suggested, however, that about 85-90% of phyllodes tumors are benign and that approximately 10-15% are malignant. Although benign phyllodes tumors do not metastasize, they have a tendency to grow aggressively and can recur locally. Like other sarcomas, malignant phyllodes tumors metastasize hematogenously.

What are the chances of phyllodes tumor recurrence?

Background: Phyllodes tumours (PT) of the breast are fibro-epithelial neoplasms that are known to recur locally in up to 19% of patients. The failure to achieve adequate surgical margins is an important risk factor for local recurrence.

What is the difference between fibroadenoma and phyllodes tumor?

Fibroadenomas grow up to 2-3 cm and then stop growing but phyllodes tumors grow continually and sometimes are to 40 cm big. Both these lesions have two components, epithelial and stromal. Clinically fibroadenomas are well circumscibed, hard, oval, movable lesions.

What size is a phyllodes tumor?

The median size of phyllodes tumors is around 4 cm. 20% of tumors grow larger than 10 cm (giant phyllodes tumor). These tumors can reach sizes up to 40 cm in diameter (see Figure 1).

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Can a fibroadenoma become a phyllodes tumor?

The transformation of a benign fibroadenoma into a phyllodes tumor is uncommon and unpredictable. We report the case of a 40-year-old woman with a core biopsy proven fibroadenoma that underwent transformation into a malignant phyllodes tumor after 3 years of size stability.