Dynamic and contrast enhanced CT imaging of lung carcinoma, pulmonary tuberculoma, and inflammatory pseudotumor

OBJECTIVE: Our main aim was to investigate the effect of dynamic and contrast enhanced CT imaging on differential diagnosis of lung carcinoma, pulmonary tuberculoma, inflammatory pseudotumor, and coexisting pulmonary tuberculosis and lung cancer.

PATIENTS AND METHODS: About, 144 patients with pulmonary sarcoidosis as the study subjects were chosen which included: 36 patients with lung carcinoma, 36 patients with pulmonary tuberculoma, 36 patients with inflammatory pseudotumor, 36 patients with coexisting pulmonary tuberculosis and lung cancer. CT imaging scan was carried out on all of these 144 patients.

RESULTS: CT scan value of lung carcinoma was different from other conditions such as pulmonary tuberculoma, inflammatory pseudotumor, and coexisting pulmonary tuberculosis and lung cancer (p < 0.01). Similarly, the peak of enhancement of lung carcinoma was different from others including inflammatory pseudotumor, and coexisting pulmonary tuberculosis and lung cancer (p < 0.01). Both, the intensive added values and S/A values of lung carcinoma, inflammatory pseudotumor, and coexisting pulmonary tuberculosis and lung cancer differed between them (p < 0.01).

CONCLUSIONS: Helical incremental dynamic CT is helpful in differential diagnoses of lung carcinoma, pulmonary tuberculoma, inflammatory pseudotumor, and coexisting pulmonary tuberculosis and lung cancer.

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