ARRS 2022 Abstracts

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E1179. Expected and Unexpected Breast Related Findings on FDG-PET CT: A Comprehensive Imaging Review
Authors
  1. Cristiane Tuma Santos; University of Mississippi Medical Center
  2. Srinivas Saripalli; University of Mississippi Medical Center
  3. Anson Thaggard; University of Mississippi Medical Center
  4. Vani Vijayakumar; University of Mississippi Medical Center
  5. Susan Shamburger; University of Mississippi Medical Center
Background
The widespread use of PET/ CT has increased the detection of hypermetabolic foci in the breast-related or unrelated to the known malignancy. The increased uptake may be associated with physiological or benign processes or due to the presence of additional primary or secondary cancers. Breast incidental hypermetabolic lesions on FDG PET/CT are reported in 0.36–1.01% of female patients. Malignancies are found in approximately 27% to 38% of the cases. At our institution, 18F-FDG PET/CT scans demonstrated a variety of benign and malignant breast lesions with hypermetabolism.

Educational Goals / Teaching Points
This exhibit will demonstrate benign and malignant breast lesions encountered on FDG PET/CT imaging at our institution; demonstrate relevant features, corresponding anatomic images, and radiology-pathology correlation; and discuss the characteristics that can differentiate between benign and malignant breast lesions.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Key imaging findings on FDG PET/CT include normal breast uptake, lactation, gynecomastia, fat necrosis, mastitis/abscess, ruptured implant, invasive ductal and lobular carcinoma, male breast carcinoma, and lymphoma.

Conclusion
The purpose of this exhibit is to demonstrate benign and malignant breast lesions that can show increased FDG uptake on PET/CT imaging and discuss the clinical variables that can differentiate between and malignant breast lesions.