[Invasive lobular carcinoma of the breast: specific diagnosis and evolution]

Area of Science:

• Oncology
• Breast Cancer Research

Background:

• Invasive lobular carcinoma (ILC) represents 4-10% of all breast cancers.
• ILC presents diagnostic challenges in clinical and radiological settings.
• ILC exhibits distinct metastatic patterns, often involving the digestive tract and ovaries, and a higher frequency of bilaterality.

Purpose of the Study:

• To summarize the key characteristics of invasive lobular carcinoma.
• To compare ILC with invasive ductal carcinoma regarding progression, prognosis, and treatment response.
• To highlight the diagnostic difficulties associated with ILC.

Main Methods:

• Review of existing literature on invasive lobular carcinoma.
• Comparative analysis of clinical, radiological, and pathological features of ILC versus ductal carcinoma.
• Evaluation of prognostic factors and treatment outcomes for ILC.

Main Results:

• ILC has a slower progression and more favorable prognostic factors than previously thought, though overall prognosis is similar to ductal carcinomas.
• Metastases in ILC are more common in the digestive tract and ovaries, and it occurs more frequently as bilateral breast cancer.
• ILC appears to be less responsive to chemotherapy compared to other breast cancer subtypes.

Conclusions:

• Invasive lobular carcinoma requires specialized diagnostic approaches due to its unique presentation.
• While prognosis is comparable to ductal carcinomas, the differential response to therapies, particularly chemotherapy, necessitates tailored treatment strategies.
• Further research into ILC biology and treatment optimization is warranted.