Consider the following medical report that includes the patient's historical health records. Use it to predict the disease that the patient is high likely exposed to. 

 Medical Report: access:rt subclavian portacath code status:full code. allergies:nkda. this is a 52 yo female with h/o ca colon from 01,lung metastasis in 02,2 brain metastasis 07,had whole brain rt had radiosurgery with cyberknife x2 this year.has been taking dexamethasone for swelling.had chemo 2 weeks ago.pt has been having on/off headache while on reducing dose of dexamethasone. yesterday pt developed severe ha with vomitting and feeling dizzy and unsteady gait.pt came to ed. in ed vitals stable had zofran and morphine.had ct scan which showed no significant change from previous scan.(mild swelling)-->s/b nerosurg-->?herniation.transfered to micu for close monitoring of status. neuro:pt is alert oriented x3.mae with good strength.pearl size 3. pulm:ls clear on ra.saturating >95%. cvs:in nsr,nbp stable. gi: soft with pos bs,no bm this shift. gu:has not passed urine. id:afebrile. plan:for mri this am.if significant swelling or fluid collection will do ventricular drain. monitor neuro status closely. dexamethasone q6. procedure: other operations on extraocular muscles and tendons other excision or destruction of lesion or tissue of brain intravascular imaging of intrathoracic vessels diagnoses: obstructive hydrocephalus secondary malignant neoplasm of brain and spinal cord personal history of malignant neoplasm of large intestine secondary malignant neoplasm of lung 

Answer: The patient is high likely exposed to