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case_images: Ultrasonography of the abdominal wall showing multiple hypoechoic, disc-shaped lesions.
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case_images: The biggest mass was hypervascular and located inferomedially in the right iliac region measuring (50 x 20) mm and infiltrating the rectus abdominis muscle (Figure 1).
case_images: PET scan showing bilateral subcutaneous masses with high accumulation of radioactive material in the abdominal and pelvic wall with infiltration of the abdominal wall muscles.
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case_images: The largest mass, which has the highest accumulation of the radioactive material, was in the right iliac mass and measured (50 x 20) mm with a standardized uptake value (SUV) of 17.9 (Figure 2).
case_images: Gross inspection of the abdominal masses after the excisional biopsy.
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case_images: Therefore, excisional biopsies were taken from the abdominal wall lesions and pathological findings showed soft to rubbery gray-yellowish masses that consisted of large atypical lymphocytes with a high nuclear-to-cytoplasmic ratio (Figures 3 and 4).
case_images: (A) Histopathology showing diffuse proliferation of atypical large lymphoid cells with a high nuclear-to-cytoplasmic ratio (H&E stain, x200). (B) The large lymphoid neoplastic cells with prominent nucleoli (H&E stain x 400).
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case_images: Therefore, excisional biopsies were taken from the abdominal wall lesions and pathological findings showed soft to rubbery gray-yellowish masses that consisted of large atypical lymphocytes with a high nuclear-to-cytoplasmic ratio (Figures 3 and 4).
case_images: Immune stains show CD20 positivity (x100) [A], BCL2 positivity (x100) [B], BCL6 positivity (x100) [C], CD5 negativity (x100) [D], and Ki67: High rate ~ 80% (x100) [E].
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case_images: KI67 was approximately 80% (Figure 5).