case_images: PMC9073112_01
case_images: MRI images showing a heterogenous well-defined right gluteal soft tissue mass (a and b) and multifocal hypointense lesions of the pelvic bones and appendicular skeleton (c) suggestive of metastatic lesions.
case_images: 10.1177_17562872221096384-fig1.jpg
case_images: PMC9073112_01_10.1177_17562872221096384-fig1.jpg
case_images: fig1-17562872221096384
case_images: TV x AP) heterogeneous well-defined, right gluteal intermuscular soft tissue mass. The visualized pelvic bones and appendicular skeleton on MRI demonstrated low signal intensity on T1-weighted images with multifocal hypointense lesions suggestive of secondary metastatic disease (Figure 1).
case_images: 99mTc methylene diphosphonate (MDP) bone scintigraphy demonstrating widespread osteoblastic skeletal metastases involving the axillary and appendicular skeletal system.
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case_images: PMC9073112_01_10.1177_17562872221096384-fig2.jpg
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case_images: Widespread osteoblastic lesions were also identified on 99mTc methylene diphosphonate (MDP) bone scintigraphy (Figure 2).
case_images: (a) Microscopic images showing monomorphic malignant epithelial cells arranged in fused and poorly formed glands, as well as small nests (haematoxylin and eosin, 100x); (b) gland-forming cells with moderate amphophilic cytoplasm, round nuclei and distinct nucleoli (haematoxylin and eosin, 400x); and (c) NKX3.1 immunohistochemistry showing strongly diffuse nuclear expression in the neoplastic cells, associated lymphocytes and fibroblasts is negative (200x).
case_images: 10.1177_17562872221096384-fig3.jpg
case_images: PMC9073112_01_10.1177_17562872221096384-fig3.jpg
case_images: fig3-17562872221096384
case_images: A Tru-cut biopsy of the gluteal mass showed core biopsies of subcutaneous tissue demonstrating metastatic adenocarcinoma (Figure 3).