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A. Hatibi
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P1.04 - Poster Session with Presenters Present (ID 456)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Pulmonology
- Presentations: 1
- Moderators:
- Coordinates: 12/05/2016, 14:30 - 15:45, Hall B (Poster Area)
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P1.04-020 - Management of Lung Cancer in Patients with past Pulmonary Tuberculosis and Their Possible Causative Link (ID 4170)
14:30 - 14:30 | Author(s): A. Hatibi
- Abstract
Background:
Lung cancer and tuberculosis cause significant morbidity and mortality worldwide. In the past, it was well known that lung cancer is a specific epidemiological successor of pulmonary tuberculosis (PTB) and that it often develops in scars caused by PTB. In recent years, the relevance of the two diseases has drawn attention in terms of the close epidemiological connection and chronic inflammation-associated carcinogenesis. Although studies have found a relationship between PTB and lung cancer, results for the long-term risk and the role of confounding factors remain inconclusive. Therefore, it is important to delineate the relationship between PTB and lung cancer.
Methods:
Clinical files of all patients diagnosed with lung malignancy between 2011 and 2016 were investigated retrospectively in terms of patient characteristics, definite histopathological diagnosis and stage of tumor, operation methods, and associated complications.
Results:
Mean age was 56.4 years. Past PTB was detected in 3% of operated carcinoma patients and in 6% of all patients diagnosed with lung malignancy. Central lung cancer was diagnosed in 80% of cases and peripheral in 20%. Epidermoid cancer was diagnosed in 51% of cases, adenocarcinoma in 24% and adenoepidermoid carcinoma in 25%. All cases of operable lung cancers were in stage I and II, while inoperable lung cancers were in stage IIIB and IV. Lobectomy was performed in 100% of the operated cases. None of the patients received anti-TB treatment preoperatively or postoperatively because by the time they were diagnosed with lung cancer, their sputum culture for M.Tuberculosis had converted negative. No postoperative mortality or reactivation of TB was seen.
Conclusion:
PTB is an important risk factor for lung cancer, possibly related to chronic inflammation and shared risk factors. Our study adds to the evidence that implicates chronic inflammation and pulmonary scarring in the etiology of lung cancer. However, further studies are needed to clarify whether there is a direct causative link between PTB and lung cancer. Surgery is the method of choice in treatment of lung cancer in subjects with past PTB history.
