The authors have claimed symptomatic or radiographic improvement in all cases of active PTB. Therefore, in those nine patients with normal chest radiographs and active PTB, follow-up HRCT scans of the thorax must have been done to assess radiologic improvement. How do we view this very high dose of radiation exposure in these young soldiers? It is well known that radiation generates highly reactive free radicals and is carcinogenic, teratogenic, and mutagenic. It has been associated with cancers of the thyroid, bone, lung, breast, and leukocytes.2 Like lead and asbestos, radiation has no safe threshold. Therefore, performing HRCT scans of the thorax in only those patients who have symptoms suggestive of active PTB seems to be a more pragmatic approach.