case_images: PMC10257786_01
case_images: Right breast with asymmetric enlargement, skin redness, increased local warmth, and tenderness to the touch.
case_images: RJME-64-1-73-fig1.jpg
case_images: PMC10257786_01_RJME-64-1-73-fig1.jpg
case_images: F1
case_images: Right mastitis was the diagnosis (Figure 1).
case_images: Sonography and mammography: (A) The sonogram shows a large (>14 cm), round, circumscribed, heterogeneous, hypoechoic mass in the outer quadrants; (B) The lateral projection mammogram reveals a well-defined mass except in the back margin adjacent to the pectoral muscle.
case_images: RJME-64-1-73-fig2.jpg
case_images: PMC10257786_01_RJME-64-1-73-fig2.jpg
case_images: F2
case_images: A sonogram showed a >14 cm, round, circumscribed, heterogeneous, hypoechoic mass in the outer quadrants (Figure 2A). The mammograms revealed a 14.5 cm, ovoid, well-defined (except in the back margin adjacent to the pectoral muscle), high-density mass, without internal calcifications in the outer quadrants [Breast Imaging Reporting and Data System (BI-RADS) 4C] (Figure 2B).
case_images: Core needle biopsy showing a high-grade monomorphic spindle cell sarcoma. Hematoxylin-Eosin (HE) staining, x200.
case_images: RJME-64-1-73-fig3.jpg
case_images: PMC10257786_01_RJME-64-1-73-fig3.jpg
case_images: F3
case_images: A core needle biopsy showed a high-grade monomorphic spindle cell sarcoma (Figure 3).
case_images: Mammary computed tomography (CT) scan and positron emission tomography (PET)/CT scan: (A) Iso-attenuated mass in the axial CT scan; (B) The PET/CT scan reveals a high metabolic activity in the periphery of the mammary lump, with areas of hypometabolism corresponding to cystic or necrotic areas.
case_images: RJME-64-1-73-fig4.jpg
case_images: PMC10257786_01_RJME-64-1-73-fig4.jpg
case_images: F4
case_images: Computed tomography (CT) scan of the right breast revealed an iso-attenuated nodular lump (Figure 4A). The positron emission tomography (PET)/CT scan with 2-Deoxy-2-[18F] fluoro-D-glucose uptake demonstrated exclusively high metabolic activity in the tumor periphery with areas of hypometabolism corresponding to cystic or necrotic zones [maximum standardized uptake value (SUVmax) 15.55] (Figure 4B).