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Nonparasitic splenic cysts: pathogenesis, classification, and treatment
1Department of Surgery, Cedars-Sinai Medical Center and UCLA School of Medicine, Los Angeles, CA, USA.
Journal of the American College of Surgeons
|March 15, 2002
Summary
Nonparasitic splenic cysts (NPSCs) are congenital lesions originating from mesothelium, not trauma. Surgical removal via partial splenectomy or cystectomy is recommended for symptomatic or large NPSCs.
Area of Science:
- Surgical pathology
- Gastroenterology
- Abdominal imaging
Background:
- Nonparasitic splenic cysts (NPSCs) are rare splenic lesions.
- Previous classifications based on epithelial lining caused diagnostic confusion.
- Epithelial lining is an unreliable criterion for determining NPSC etiology.
Purpose of the Study:
- To investigate the etiology and pathology of NPSCs.
- To propose a new classification system for NPSCs.
- To evaluate treatment strategies for NPSCs.
Main Methods:
- A 28-year retrospective study of 23 NPSC patients.
- Analysis of patient history, cyst lining, gross pathology, and treatment.
- Correlation of clinical findings with pathological characteristics.
Main Results:
- NPSCs exhibit characteristic gross pathology and lining types (epidermoid, transitional, mesothelial).
- Desquamation of the lining can lead to misdiagnosis, but remnants are usually found.
- Laparoscopic techniques show promise for NPSC treatment.
Conclusions:
- A new classification of NPSCs is proposed based on gross findings.
- NPSCs are of congenital origin, with mesothelial lining; trauma is not a primary factor.
- Symptomatic or large NPSCs (>5 cm) require surgical intervention (partial splenectomy or cystectomy).