An Informationen über diese Tumorart kommt man wirklich schwer. Auch in Fachzeitschriften. Hier der entscheidende Ausschnitt aus einen etwas älteren Artikel. Den ganzen Artikel schicke ich gern zu.

The Oncologist, Vol. 2, No. 6, 351–358, December 1997
Adjuvant Drug Treatment for Resectable Breast Cancer
Clifford A. Hudis, Larry Norton
Tumor size remains the most consistent and reliable prognostic factor for node-negative patients. Infiltrating ductal carcinomas, not otherwise specified, or infiltrating lobular carcinomas measuring up to one centimeter in diameter have a 13% actuarial risk of relapse at 21 years, while special histologic types of node-negative cancer such as tubular, papillary, true medullary, mucinous, or adenoid cystic have a similarly low risk of recurrence with tumor diameters of up to three centimeters. Patients with tumors in these lowest-risk categories might gain no more than two percentage points in benefit distributed over ten years from systemic therapy.
Gruß Dorothee