case_images: PMC9294466_01
case_images: Preoperative findings: a 3 x 4-cm, soft, nontender, mobile, and palpated mass was found in the left inguinal area (arrow).
case_images: fsurg-09-894416-g001.jpg
case_images: PMC9294466_01_fsurg-09-894416-g001.jpg
case_images: F1
case_images: On physical examination, a soft, nontender, mobile, and palpable mass, 4 cm in size, was found in the inguinal area, 5 cm inferior to the left inguinal ligament (Figure 1).
case_images: Preoperative CT scan: (A) A 1.7-cm, regional conglomeration of dense, soft tissue is evident. (B) Lesion in (A) is surrounded by benign-looking adipose tissue.
case_images: fsurg-09-894416-g002.jpg
case_images: PMC9294466_01_fsurg-09-894416-g002.jpg
case_images: F2
case_images: Abdominal CT showed an approximately 4-cm, heterogeneously enhancing, nodular neoplasm in the left inguinal area (Figure 2).
case_images: Gross finding: A single discrete rubbery mass with an enlarged lymph node: a solid portion is seen inside the fatty mass (arrow).
case_images: fsurg-09-894416-g003.jpg
case_images: PMC9294466_01_fsurg-09-894416-g003.jpg
case_images: F3
case_images: On gross examination, the mass was about 5 cm in size, soft, and lipomatous in consistency (Figure 3).
case_images: Microscopy findings: (A) Normal microscopic features of female breast tissue are evident. Multiple ducts lined by myoepithelial and epithelial cells (arrow) with surrounding stroma and adipose tissue (asterisks) are seen. (B) Immunohistochemistry (IHC) staining for estrogen receptor (ER) showing positivity throughout the whole glandular epithelium (arrow). (C) IHC staining for progesterone receptor (PR) showing positivity throughout the glandular epithelium. (D) IHC staining for GATA binding protein 3 showing positivity.
case_images: fsurg-09-894416-g004.jpg
case_images: PMC9294466_01_fsurg-09-894416-g004.jpg
case_images: F4
case_images: Histology showed a complete lobular structure surrounded by adipose and a collagenous stromal background, which is not a typical finding of a lipoma nor a lymphoproliferative lesion (Figure 4A). IHC for estrogen receptor (ER), progesterone receptor (PR), and GATA3 all showed positive expression (Figures 4B-D).