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Updated: Jul 12, 2026

Intraductal Injection for Localized Drug Delivery to the Mouse Mammary Gland
Published on: October 4, 2013
Placement of an implantable drug delivery system under the breast
John M Compoginis1, Steven H Richeimer, Garry S Brody
1Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA.
Objective:
Our case will demonstrate a safe and practical alternative location for an implantable drug delivery system (IDDS) pump. Traditionally, these pumps have been placed subcutaneously in the lower abdomen. We will describe the technique used for under the breast placement.
Patient:
The patient was a 52-year-old female with metastatic colon cancer and chronic flank pain.
Results:
The pump was placed in the retromammary location with no complications or problems with patient discomfort. Adequate pain control was achieved.
Conclusion:
The retromammary location for the IDDS pump is a safe and aesthetically pleasing option for some patients. This location is a useful alternative for female cachectic patients, or patients with abdominal ostomies.
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