Hazuki Takishima MD, Presenter: Nothing to Disclose

Kohei Inoue MD, PhD, Abstract Co-Author: Nothing to Disclose

Ken Motoori MD, Abstract Co-Author: Nothing to Disclose

Takashi Uno, Abstract Co-Author: Nothing to Disclose

1. To understand their radiological findings and collerate with pathological features 2. To use this knowledge for differential diagnosis

Purpose and aim The vast majority of invasive breast carcinomas are invasive ductal carcinoma, not otherwise specified (IDC-NOS) and invasive lobular carcinoma and the others are uncommon. Each of the uncommon types does not always have the same frequency of lymph node metastasis or the same prognosis in terms of the differentiation of the pathological or immunohistological feature. Because they don’t always show a characteristic radiological feature, it is difficult to distinguish some cases from benign tumors. So it is very important to recognize the character of these tumors. The purpose of this paper is to understand the radiological findings for differential diagnosis. Content organization We present MRI images of uncommon breast tumors (mucinous carcinoma, neuroendocrine tumors, invasive micropapillary carcinoma, apocrine carcinoma, metaplastic carcinoma, sebaceous carcinoma) and examined radiological findings as compared with pathological features. Summary Uncommon types of breast carcinoma are not seen very frequently, but their radiological features often overlap. Thus, it is necessary to have a sufficient understanding of the radiological findings of each tumor.

http://abstract.rsna.org/uploads/2014/14005615/14005615_asbz.pdf

Takishima, H, Inoue, K, Motoori, K, Uno, T, Uncommon Malignant Breast Tumors: Differential Diagnosis and Findings on MRI.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14005615.html