basaloid follicular neoplasms spiradenoma Cellular neoplasm with well formed palisades of basaloid cells adjacent to less basophilic smaller cells with occasional central deposition of amorphous eosinophilic material. These tumors share some features with cylindroma type tumors but have a less well developed jigsaw puzzle-like architecture and tend to be more cellular. MPATH:577 mouse_pathology.ontology