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Updated: May 25, 2026

Application of the En Bloc Concept Combined with Anatomic Resection in Laparoscopic Hepatectomy
Published on: March 10, 2023
Case report: a left upper quadrant complex cystic mass
Lydia Choi1, Neena Mirani, Steve H Kim
1Departments of Surgery and Oncology, Wayne State University School of Medicine and the Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA.
Abstract:
A 61-year-old woman presented with left upper quadrant/flank pain and increasing abdominal girth. CT scan showed a large complex, multi-cystic lesion in the left abdomen. Laparotomy revealed a large retroperitoneal mass attached to the left kidney. Left nephrectomy was performed and pathology demonstrated a benign cystic nephroma. Surgical oncologists should be aware of this rare renal lesion as the clinical and radiographic presentation may mimic other intra-abdominal cystic lesions.
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