MR imaging of Nasal and Paranasal Sinus Malignant Neoplasms

The diagnostic utility of extremely low field magnetic resonance (MR) imaging was evaluated in 25 patients with focal hepatic masses, including 17 with primary (n=7) or secondary (n= 10) malignant neoplasms and 8 with benign lesions (6 hemangiomas). The findings were compared with the results of computed tomography (CT). Out of 16 patients with malignant tumors demonstrated by both modalities, the diagnostic information from MR imaging was equal to or better than that from CT in 6 patients and inferior to CT in 10. Shortcomings of MR were mainly due to low signal-to-noise ratio and poor spatial resolution, resulting in an image quality inferior to that obtained at higher field strengths. Considering these facts, together with the long imaging times required, low field MR cannot be recommended for general use in the evaluation of hepatic masses. On the other hand, our results indicate that this technique may be useful in establishing the diagnosis of hepatic hemangioma.

Download Full-text

The prevalence of paranasal sinus disease in HIV infection and AIDS on cranial MR imaging

Clinical Radiology ◽

10.1016/s0009-9260(05)81154-7 ◽

1993 ◽

Vol 47 (3) ◽

pp. 166-169 ◽

Cited By ~ 11

Author(s):

W.K. Chong ◽

M.A. Hall-Craggs ◽

I.D. Wilkinson ◽

M. Paley ◽

A. Grant ◽

...

Keyword(s):

Mr Imaging ◽

Hiv Infection ◽

Paranasal Sinus ◽

Sinus Disease ◽

Paranasal Sinus Disease

Download Full-text

Assessment of nasal and paranasal sinus masses by diffusion-weighted MR imaging

Journal of Neuroradiology ◽

10.1016/j.neurad.2009.06.001 ◽

2009 ◽

Vol 36 (4) ◽

pp. 206-211 ◽

Cited By ~ 48

Author(s):

A.A.K.A. Razek ◽

S. Sieza ◽

B. Maha

Keyword(s):

Mr Imaging ◽

Paranasal Sinus ◽

Diffusion Weighted

Download Full-text

Paranasal sinus hemorrhage: evaluation with MR imaging.

Radiology ◽

10.1148/radiology.162.2.3797665 ◽

1987 ◽

Vol 162 (2) ◽

pp. 499-503 ◽

Cited By ~ 20

Author(s):

R A Zimmerman ◽

L T Bilaniuk ◽

D B Hackney ◽

H I Goldberg ◽

R I Grossman

Keyword(s):

Mr Imaging ◽

Paranasal Sinus

Download Full-text

Echoplanar MR imaging for characterization of adrenal masses in patients with malignant neoplasms: preliminary evaluation of calculated T2 relaxation values.

American Journal of Roentgenology ◽

10.2214/ajr.164.4.7726047 ◽

1995 ◽

Vol 164 (4) ◽

pp. 911-915 ◽

Cited By ~ 11

Author(s):

L H Schwartz ◽

D M Panicek ◽

J A Koutcher ◽

R T Heelan ◽

M S Bains ◽

...

Keyword(s):

Mr Imaging ◽

Malignant Neoplasms ◽

Preliminary Evaluation ◽

T2 Relaxation ◽

Adrenal Masses

Download Full-text

Colliding Tumor of the Paranasal Sinus

Allergy & Rhinology ◽

10.2500/ar.2013.4.0040 ◽

2013 ◽

Vol 4 (1) ◽

pp. ar.2013.4.0040 ◽

Cited By ~ 7

Author(s):

Henry P. Barham ◽

Sherif Said ◽

Vijay R. Ramakrishnan

Keyword(s):

Head And Neck ◽

Paranasal Sinus ◽

Nasal Congestion ◽

Malignant Neoplasm ◽

Cell Types ◽

Malignant Cell ◽

Malignant Neoplasms ◽

Neck Malignancy ◽

History Of ◽

Optimal Approach

Sinonasal malignant neoplasms comprise only 3% of all head and neck malignancies. Synchronous and metachronous tumors of the head and neck have been described, but rarely have there been reports of a single tumor with two distinct histologies. Here, we describe a case of a sinonasal malignant neoplasm with two distinct histologies. A case report and literature review was performed. We present a case of paranasal sinus neoplasm involving two malignant cell types. An 83-year-old woman presented with a 2-year history of symptoms suggestive of chronic sinusitis, which included nasal congestion and intermittent midface pressure. More recently, her symptoms progressed with the development of left-side epistaxis and she was found to have a mass in the left maxillary and ethmoid regions. A biopsy of the maxillary sinus mass revealed a moderately differentiated squamous cell carcinoma (SCC). She underwent complete resection of the lesion through an extended endoscopic approach. Final pathological analysis showed a malignant neoplasm with two distinct malignant morphologies; a moderately differentiated SCC and small cell neuroendocrine carcinoma. Appropriate diagnosis and treatment of head and neck malignancy depends on accurate tumor classification and staging. We present a case of a sinonasal tumor with two distinct malignant entities and review the available literature on the subject. Additionally, we discuss the etiologic theories and challenges in planning the optimal approach to management in this scenario.

Download Full-text