Iranian Journal of Nuclear Medicine

Iranian Journal of Nuclear Medicine

Sentinel lymph node mapping in ectopic breast cancer: A case report evaluating the efficacy of peri-areolar versus peri-tumoral injection techniques

Document Type : Case Report

Authors
Nasrin Raeisi 1
Amin Saber Tanha 1
Asieh Sadat Fattahi 2
Somaye Barashki 1
Ramin Sadeghi 1
1 Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2 Endoscopic and Minimally Invasive Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
10.22034/irjnm.2025.129897.1661
Abstract
We present a rare case of primary breast cancer occurring within accessory breast tissue located in the left axillary region who was referred to our department for sentinel lymph node (SLN) mapping. Initial   peri-tumoral injection of the radiotracer didn’t show any axillary SLN. However, when the tracer was re-injection in the peri-areolar region of the normal (eutopic) breast, it successfully identified axillary sentinel node which was most clearly seen best on SPECT/CT images. This case underscores the feasibility of sentinel node mapping in cancer of ectopic breast tissue, highlighting that injection in the peri-areolar region of the eutopic breast appears to be a more effective technique.
Keywords
Ectopic breast cancer
Lymphoscintigraphy
Accessory breast
Sentinel lymph node
Nuclear medicine
Subjects
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