Additional testing may include testing of blood and tissue samples, diagnostic imaging such as ultrasound and radiography, biopsies of masses, internal organs or bone marrow, and endoscopy including; bronchoscopy (lungs), cystoscopy (bladder & urethra), colonoscopy (colon & small bowel), gastroduodenoscopy (stomach & upper intestines), rhinoscopy (nasal cavity),
laparoscopy (minimally invasive surgery for biopsies of internal organs).