Primary sarcoma/sarcomatoid carcinoma; Spindle/Rhabdoid and polygonal cells occasional stellate cells, focal myxoid stroma; Heavy eosinophilic infiltrate with scattered plasma cells; CD68 positive; Desmin and Alk-1 (CD246) Caldesmon negative; Smooth muscle actin/myosin positive Eosinophilic Charcot-leyden crystals; Widespread necrosis with calcification; Frequent mitotic figures. The gene discussed is CALD1; the disease is sarcomatoid carcinoma.