A diaphragmatic retroperitoneal cyst.
Diaphragmatic lesions are usually congenital bronchogenic cysts. A patient with a known diaphragmatic cyst presented with new onset right upper quadrant pain. Repeat imaging showed enlargement of the cyst, the CA19-9 cancer marker was raised at 312 iu/ml (normal: <27 iu/ml) and positron emission tomography combined with computed tomography showed focally increased uptake in the cystic wall. In view of symptoms and risk of neoplasia, the lesion was excised. Histology showed a benign epidermoid cyst. Features falsely suggesting neoplasia have been reported previously with benign splenic cysts but not with a benign diaphragmatic epidermoid cyst.
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Robertson
Division of Surgery and Interventional Science, Royal Free Campus, University College London , UK.
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Tsironis
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Davidson
D014408:Biomarkers, Tumor / Q000032:analysis; D003964:Diaphragm / Q000000981:diagnostic imaging / Q000473:pathology*; D004814:Epidermal Cyst / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed
D014408:Biomarkers, Tumor
CA19–9; Computed tomography; Epidermoid cyst; Positron emission tomography