NCIt definition : A TNM finding indicating the spread of cancer to distant anatomic sites. The definition
of M1b TNM finding depends on the specific type of cancer that it refers to; for example,
for colorectal cancer it refers to metastases in more than one organ/site or the peritoneum;
for prostate cancer it refers to metastasis to bone(s); for bone cancer it refers
to metastasis to distant sites other than lung.;
Currated CISMeF NLP mapping