Related Experiment Video For SDHB
Updated: Jan 9, 2026
Laparoscopic S7 Hepatectomy with Positive Fluorescence Staining
Published on: May 9, 2025
Case report and literature review: primary hepatic leiomyosarcoma with misdiagnosis and SDHB positive expression
Chengbin Lu1,2, Wenchao Ding2, Xiaoli Ma2
1Department of Hepatobiliary-Pancreatic-Thyroid-Vascular Surgery, Yuxi People's Hospital, The Sixth Affiliated Hospital of Kunming Medical University, Yuxi, Yunnan, China.
Background:
Primary hepatic leiomyosarcoma (PHL) is an extremely rare malignancy often misdiagnosed due to nonspecific imaging features overlapping with cholangiocarcinoma. This case highlights diagnostic challenges and the potential association of SDHB positivity with PHL prognosis.
Case Presentation:
A middle-aged male presented with an asymptomatic liver mass. Preoperative CT/MRI revealed a 10-cm lesion with progressive heterogeneous enhancement and delayed capsular enhancement, initially diagnosed as cholangiocarcinoma. Left hepatic lobectomy confirmed PHL. Immunohistochemistry showed SDHB positivity and low Ki67 (15%). The patient recovered well with no recurrence at 6-month follow-up.
Conclusions:
PHL can radiologically mimic cholangiocarcinoma, necessitating inclusion in differential diagnoses for "cholangiocarcinoma-like" liver masses. SDHB positivity may indicate favorable tumor biology, but further studies are needed to validate its prognostic value. Surgical resection remains curative for localized PHL.
