Final answer:
The symptoms described suggest a possible tuberculosis infection. A definitive diagnosis can be made through imaging studies and laboratory tests.
Step-by-step explanation:
The symptoms described in the question are consistent with a pulmonary infection. The presence of a nodular infiltrate with cavitation suggests a possible tuberculosis infection. Tuberculosis is a bacterial infection caused by Mycobacterium tuberculosis, which primarily affects the lungs. It is characterized by the formation of granulomas and can lead to symptoms such as fever, cough, night sweats, and weight loss. A definitive diagnosis can be made through imaging studies, such as chest radiographs, and laboratory tests including sputum cultures and polymerase chain reaction (PCR) tests.