case_images: PMC11102049_01
case_images: (A-D) Abdominal CT showed multiple huge masses in the abdominal cavity. By the eighth surgery, the larger masses had grown to 23x12 cm.
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case_images: f1
case_images: Throughout the course of the disease, the patient has experienced a total of 7 recurrences and has undergone 8 surgeries.  Figure 1  displays the abdominal CT scan since the seventh recurrence, illustrating the presence of multiple tumors.
case_images: (A, B) Frontal and lateral appearance of the patient's abdomen before the eighth surgery. (C) A total of 21 retroperitoneal tumors were removed in the eighth operation. (D, E) The maximum size of the tumor is 32x26cm, and the cut surface is fish-shaped.
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case_images: f2
case_images: The eighth operation revealed the largest tumor measuring 32 x 26 cm, with a total weight of 12 kg ( Figure 2 ).
case_images: The patient's eighth postoperative pathological analysis (hematoxylin and eosin staining, x100 magnification) showed dedifferentiated liposarcoma, with localized pleomorphic liposarcoma.
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case_images: f3
case_images: All postoperative pathological diagnoses primarily indicated DDLPS, with local WDLPS, MLS, and PLPS also present ( Figure 3 ).
case_images: Timeline of this case.
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case_images: f4
case_images: The timeline of this case is depicted in  Figure 4 .