Name of the Condition

• Unspecified type of carcinoma in situ of right breast
• Often referred to as "in situ breast carcinoma" or "non-invasive breast cancer."

Summary

Carcinoma in situ of the breast refers to a group of abnormal cells that remain in the place where they first formed and have not spread to nearby breast tissue. It is considered the earliest form of breast cancer and typically does not cause symptoms.

Causes

• Genetic mutations affecting cell growth regulation.
• Hormonal influences.
• Certain lifestyle factors, such as alcohol consumption and obesity, may contribute to the risk.

Risk Factors

• Advancing age, particularly post-menopausal women.
• Family history of breast cancer.
• Genetic mutations in BRCA1 or BRCA2 genes.
• Prior history of breast conditions like atypical hyperplasia.

Symptoms

• Usually asymptomatic and often detected through routine mammograms.
• Occasionally, a small, localized lump may be felt.

Diagnosis

• Mammography is the primary screening tool.
• Breast ultrasound or MRI may provide additional information.
• Biopsy through fine-needle aspiration, core needle, or surgical biopsy confirms diagnosis.

Treatment Options

• Surgery: Lumpectomy (removal of the tumor and some surrounding tissue) or mastectomy (removal of one or both breasts) to eliminate abnormal cells.
• Radiation Therapy: Often follows surgery to eradicate remaining cancer cells.
• Hormone Therapy: Medications such as Tamoxifen may be used for hormone receptor-positive cancers to reduce recurrence risk.

Prognosis and Follow-Up

• Excellent prognosis with appropriate treatment; carcinoma in situ is highly treatable.
• Continuous monitoring through regular mammograms and physical exams is vital for early detection of any recurrence or new occurrence.

Complications

• If untreated, carcinoma in situ could progress to invasive breast cancer.
• Surgical treatments may lead to complications such as infection or changes in breast appearance.

Lifestyle & Prevention

• Maintaining a healthy weight, regular exercise, and a balanced diet can mitigate risk factors.
• Limiting alcohol consumption and considering genetic counseling if at high risk.

When to Seek Professional Help

• Seek medical advice if you notice any changes in breast appearance, lumps, or discharge.
• Regular screening is recommended, especially if you have a higher risk profile.

Additional Resources

• American Cancer Society (Cancer Information and Support)
• Breastcancer.org (Patient Resources and Information)
• National Breast Cancer Foundation (Education and Support)

Tips for Medical Coders

• Ensure correct laterality of the breast is coded (right breast in this case with D05.91).
• Double-check that the condition is specified as "in situ" and not an invasive form.
• Be vigilant about supporting documentation to accurately reflect the diagnosis.