What type of breast cancer is less common and characterized as Invasive Lobular Carcinoma?

Invasive Lobular Carcinoma is indeed less common compared to other breast cancer types, particularly Invasive Ductal Carcinoma, which is the most prevalent form of breast cancer. This specific type of cancer originates from the lobules, the milk-producing glands in the breast.

Invasive Lobular Carcinoma tends to have unique histological features, including the presence of small, non-cohesive cells that invade surrounding tissues in a "linear" pattern, often making it more insidious and, at times, harder to detect on mammograms and physical exams. Compared to ductal carcinoma, lobular carcinoma may present with different patterns of growth and can sometimes be bilateral (occurring in both breasts) more frequently.

The other types mentioned, such as Ductal Carcinoma In Situ and Invasive Ductal Carcinoma, represent different classifications of breast cancer, with ductal carcinoma in situ being a non-invasive form and invasive ductal carcinoma being the most common invasive breast cancer. Malignant neoplasm is a broad term that refers to any cancerous growth but does not specifically denote the characteristics or origins of breast cancer. Therefore, the identification of Invasive Lobular Carcinoma as the correct answer focuses accurately on