Acute haemorrhage from a retroperitoneal liposarcoma: a rare presentation

Area of Science:

• Urology
• Surgical Pathology
• Oncology

Background:

• A 61-year-old woman presented with acute abdominal pain and collapse.
• Imaging suggested a ruptured renal mass with perirenal hematoma.

Observation:

• A large, fat-containing lesion (21 cm) was identified in the left kidney.
• Initial diagnosis was a ruptured angiomyolipoma.
• Patient underwent emergency radical nephrectomy.

Findings:

• Histopathology confirmed a well-differentiated liposarcoma, a rare renal tumor.
• The patient had a normal clotting profile and moderate renal impairment.

Implications:

• This case underscores the diagnostic challenges in differentiating benign and malignant renal masses based on imaging alone.
• Accurate histopathological diagnosis is crucial for appropriate management of renal tumors.
• Radical nephrectomy can be a successful treatment for symptomatic, ruptured renal liposarcoma.