Imaging manifestation of metastatic tumors in nasal cavity and paranasal sinuses
10.3760/cma.j.issn.1005-1201.2015.05.012
- VernacularTitle:鼻腔鼻窦转移瘤的影像表现分析
- Author:
Bin JIANG
;
Jianhong LI
;
Fei YAN
;
Junfang XIAN
- Publication Type:Journal Article
- Keywords:
Nasal cavity;
Paranasal sinuses;
Neoplasm metastasis;
Tomography,X-ray computed;
Magnetic resonance imaging
- From:
Chinese Journal of Radiology
2015;(5):372-375
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the imaging manifestations of metastasis in the nasal cavity and paranasal sinuses. Methods Twelve lesions of 10 patients with pathologically proved metastasis were retrospectively reviewed, including 6 renal clear cell carcinoma, 2 pulmonary adenocarcinoma, 1 colorectal carcinoma and 1 hepatic carcinoma. All the patients underwent CT and MRI scan.Among them,9 patients had contrast enhanced MRI scan and 5 patients had dynamic contrast-enhenced MRI as well. The location, bone changes, shape,margin,density,signal intensity, and enhancement characteristics of the lesions were observed. Results The metastasis involved spheno-ethmoid area(n=3), ethmoid sinus (n=2), maxillary sinus (n=2), nasal cavity(n=2), fronto-ethmoid area(n=2) and sphenoid sinus (n=1). All 12 metastatic lesions demonstrated bone destruction with tumor bone formation in 1 lesion. The CT displayed 10 metastases showed equal density, one mixed density was high, another form of low-density mixed. MR imaging showed equal signal in 9 lesions, while low-mixed signal in 3 lesions on T1WI compared with grey matter were found. On T2WI, 11 lesions showed high mixed signal and homogeneous low signal in 1 lesion. All 12 lesions demonstrated markedly heterogenous enhancement after intravenous administration of contrast media. Of 5 cases with dynamic contrast-enhanced MRI scanning, 4 lesions demonstrated wash-out time-signal intensity curve (TIC) pattern and 1 lesion demonstrated plateau pattern. Conclusions Renal carcinoma is the most common primary tumor for nasal cavity and paranasal sinuses metastasis. A typical imaging finding is located in the ethmoid sinuses, the soft tissue mass surrounded with rich blood supply multiple sinuses and significant bone destruction.
