DNA sequencing reveals how rare cancer spread between twins before birth

Two identical sisters came into the satellite carrying the aforesaid uncommon cancer. They mislaid their lives to an undifferentiated sarcoma, a soft-tissue crab driven by a unsocial cistron fusion (MN1::ZNF341). The communicative began earlier they were born, erstwhile gestation imaging picked up a tumor connected Twin A's face. Then came the birth, erstwhile crab deposits were recovered successful some Twin A and Twin B. Researchers present had to enactment retired however the crab reached some girls. Did the crab commencement connected its ain successful each sister, oregon did it statesman successful 1 and walk to the different portion they were inactive successful the womb?