Hi helen, I have heaps of information on mucinous cancer. If you go online and type in Mucinous Cancer Breast Cancer Support USA you will get an excellent online resource with loads of info. This is the 1st bit of info I got before I found the specific MC site.

Mucinous (Colloid) Carcinoma of the Breast

By Pam Stephan, About.com Guide,Updated August 05, 2008

Overview of Mucinous Carcinoma of the Breast:

Mucinous (colloid) carcinoma is a rare type of invasive breast cancer that is formed when cancer cells within your breast produce mucous. This mucous contains breast cancer cells that are easily distinguished from normal cells under a microscope. Together, the mucous and cancer cells form a jelly-like tumor. Most mucinous carcinomas of the breast are estrogen-receptor positive and HER2/neu negative. This type of breast cancer rarely spreads to your lymph nodes.

Mucinous Carcinoma of the Breast is an Uncommon Diagnosis:

Mucinous carcinoma of the breast is a rare type of invasive breast cancer, diagnosed in less than 3% of all women diagnosed with breast cancer.

Also Known As:

colloid carcinoma

Signs and Symptoms of Mucinous Carcinoma:

A gelatinous tumor of mucinous carcinoma of the breast will feel like a slightly bumpy water balloon, similar to harmless fluid-filled cysts. Smaller tumors may be too little to detect with your fingers, but larger tumors may press on surrounding breast tissue and cause it to feel tender. During your regular breast self-exam, if you feel an area that won't compress like the rest of your breast tissue, get it checked out by a health professional.

Tests Used to Diagnose Mucinous Carcinoma:

• Mammogram – A mucinous carcinoma of the breast will often appear on a mammogram as a mass with distinct borders, having a bumpy shape. These can sometimes look like benign masses on a mammogram.
• Breast ultrasound – A little less than half of all mucinous carcinomas will be seen on a breast ultrasound, and the smaller tumors tend to hide within fatty tissue.
• Open surgical biopsy – A tissue sample is taken and tested for specific characteristics in the lab.

                                                                                                                                          Your Prognosis for Mucinous Carcinoma:

Mucinous carcinoma of the breast usually appears in older women (ages 48 to 82) and is a medium- to- low-grade slow-growing type of breast cancer. Since it is not aggressive, your outlook, or prognosis if you are diagnosed with this type of breast cancer, is better than most other invasive breast cancers. A study done in western Australia found that, in most cases of mucinous carcinoma, the cancer did not spread to the lymph nodes nor metastasize to other parts of the body.

Treatments for Mucinous Carcinoma:

Mucinous carcinoma should be treated to get rid of the cancer and to prevent it from returning (recurrence). Treatments may include:

• Lumpectomy (surgery to remove the tumor and a margin of the surrounding tissue)
• Mastectomy (surgery to remove all of the breast tissue)
• Radiation

Hormone Therapy (for hormone-sensitive cancers)

I hope this is helpful. Do you know the grade and size of your cancer and if it is Progesterone, Oestrogen or HER (Growth Hormone receptive) I guess if you have had herceptin that it is HER +.Blessings & prayers from Patricia