Abstract
Extrarenal angiomyolipomas (ERAMLs) are rare tumors that present as incidentalomas upon imaging for other conditions. Retroperitoneal ERAMLs present a unique challenge from a diagnostic and treatment standpoint as they can mimic other benign and malignant retroperitoneal tumors. We present a case of a 39-year-old female with a 19.3 cm × 13.5 cm × 10.7 cm left extrarenal retroperitoneal mass. Histopathologic examination and HMB-45 staining revealed the mass to be a retroperitoneal ERAML. Our case report provides a comprehensive literature review and an evidence-based algorithm for taking care of patients with ERAMLs.
Highlights
Extrarenal angiomyolipomas (ERAMLs) represent a very rare subset of tumors that often present as incidentalomas upon imaging for other conditions
We present a case of a 39-year-old female with a 19.3 cm × 13.5 cm × 10.7 cm left extrarenal retroperitoneal mass detected on a follow-up chest computerized tomography, obtained after prolonged treatment for pneumonia
This paper discusses the case of a 39-year-old female who presented asymptomatically with a 19.3 cm × 13.5 cm × 10.7 cm left extrarenal retroperitoneal mass detected on a follow-up chest computerized tomography (CT) after prolonged treatment for pneumonia
Summary
Extrarenal angiomyolipomas (ERAMLs) represent a very rare subset of tumors that often present as incidentalomas upon imaging for other conditions. We present a case of a 39-year-old female with a 19.3 cm × 13.5 cm × 10.7 cm left extrarenal retroperitoneal mass detected on a follow-up chest computerized tomography, obtained after prolonged treatment for pneumonia. ERAMLs typically present as incidentalomas identified on imaging for other conditions. These tumors have prominent vascular pedicles and may present symptomatically with abdominal pain and hemorrhagic shock [2]. This paper discusses the case of a 39-year-old female who presented asymptomatically with a 19.3 cm × 13.5 cm × 10.7 cm left extrarenal retroperitoneal mass detected on a follow-up chest computerized tomography (CT) after prolonged treatment for pneumonia. Given the location and appearance of the mass, differential diagnosis included a retroperitoneal liposarcoma, leiomyosarcoma, lipoma, angiomyolipoma, adrenal adenocarcinoma, renal cell carcinoma, or leiomyoma with fatty change
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