littoral cell angioma littoral cell angioma littoral cell angioma, abbreviated lca, and formally known as littoral cell angioma of the spleen, is a benign tumour of the spleen that arises from the cells that line the red pulp. littoral cell angiomalow magnification micrograph of a littoral cell angioma. h&e stain.specialtypathology symptoms lcas most often are not clinically detectable. on occasion, their first presentation may be with splenic rupture. most patients show no symptoms and the tumours are found incidentally. diagnosis littoral cell angiomas show in ct scans. they are diagnosed by pathologists by taking a sample of the tumour via fine needle aspiration or core needle aspiration or from a splenectomy. histologically, they have anastoming small vascular channels and cystic spaces with papillary projections. very low mag. intermed. mag. very high mag. treatment the treatment for a littoral cell angioma is a splenectomy.