Morgenstern classified nonparasitic splenic cysts based on pathogenesis. The author is from Cedars-Sinai Medical Center and UCLA School of Medicine in Los Angeles.
neoplastic, benign endothelial
neoplastic, primary malignant
resolution of hematoma
resolution of splenic infarct
• The typical parasitic cyst is echinococcosis.
Congenital cysts often have a characteristic gross appearance with interior trabeculations. The lining of a congenital cyst may include:
(2) transitional epithelium
(3) squamous epithelium
(4) no cellular lining
Not all splenic cysts the lack a cellular lining are post-traumatic pseudocysts. Splenic cysts should be carefully sampled for histologic examination. The cellular lining of a congenital cyst may be present in some sections but absent in others.
Features of a traumatic cyst:
(1) otherwise normal splenic architecture
(2) documented episode of splenic trauma
(3) appearance of cyst following the traumatic episode
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Specialty: Hematology Oncology, Clinical Laboratory