Multi-slice Spiral CT Features of Lung Primary Invasive Mucinous Adenocarcinoma / 中国医学影像学杂志

ABSTRACT

PurposeTo investigate the multi-slice spiral CT features of lung primary invasive mucinous adenocarcinoma, a rare malignancy with few relevant literature. Materials and Methods Forty-one patients with pathology proven primary invasive mucinous adenocarcinoma of the lungs underwent MSCT examination, of which 27 patients received intravenous contrast. Imaging features were analyzed, and the patients were divided into groups according to morphology, density and enhancement.Results For 41 patients, 40 cases had one lesion, and one case had more than one lesion; the lesions were in the right upper lobe in 5 cases, right middle lobe in one case, right lower lobe in 17 cases, left upper lobe in 5 cases, and left lower lobe in 12 cases. There was solitary lesion in 40 cases. The other patient had multiple lesions. 29 cases showed nodules/masses, while non-mass lesions in 12 cases. Ground glass opacity was seen in 4 cases, single consolidation in 11 cases, and mixed consolidation in 26 cases. There was significant contrast enhancement in nodules/masses compared to non-mass lesions (t=5.00, 6.51 and 14.06,P<0.05).Conclusion MSCT shows a diversity of imaging features of primary invasive mucinous adenocarcinom, including single round lesion, lower lobe in both side; the density is lower than muscle on CT scan, and presents mild to moderate enhancement on enhancement scan round lesions has high density and enhancement range than irregular-shaped lesions.