Presumptive Extra-Pulmonary TB: This type of presumptive TB affects body parts other than the lungs. It can result in symptoms like swollen lymph nodes or joint pain. To diagnose this form of presumptive TB your doctor may use imaging tests such as CT scans or MRIs as well as other procedures like skin tests or tissue samples from affected areas. Treatment typically includes medications taken over several months depending on the severity of the infection.