Emily Bao Tsai MD, Presenter: Nothing to Disclose

Maitraya K. Patel MD, Abstract Co-Author: Nothing to Disclose

Elizabeth Akiyama, Abstract Co-Author: Nothing to Disclose

Manju Gan MD, Abstract Co-Author: Nothing to Disclose

Monica Deshmukh MD, Abstract Co-Author: Nothing to Disclose

Cecilia Matilda Jude MD, Abstract Co-Author: Author, UpToDate, Inc

Adenocarcinoma, squamous cell carcinoma, small cell carcinoma and large cell carcinoma comprise over 90% of primary lung tumors. The remaining neoplasms consist of uncommon histologic types of non-small cell lung carcinomas and airway, lymphopoietic and mesenchymal tumors. After viewing this presentation, participants will be able to: 1) Identify clinical and imaging features of uncommon tumors and tumor-like lesions of the lung; 2) Describe the role of cross-sectional imaging in staging and follow-up; 3) Appreciate the role of pathology in diagnosis.

The following categories of unusual lung neoplasms and tumor-like lesions are described: 1) Non-small cell lung carcinomas: adenosquamous, sarcomatoid, carcinoid, salivary gland-type; 2) Airway lesions: laryngotracheobronchial papillomatosis; 3) Lymphopoietic neoplams: angiocentric lymphoma, bronchus-associated lymphoid tissue lymphoma; 4) Mesenchymal tumors: inflammatory myofibroblastic tumor, solitary fibrous tumor, benign metastasizing leiomyoma; 5) Non-neoplastic lesions: lipoid pneumonia, amyloidoma. Imaging characteristics are mostly non-specific; however, cross-sectional imaging is useful for documenting extent of disease, describing associated findings and planning further diagnostic/therapeutic approaches. Pathologic examination provides definitive diagnosis in most cases.

http://abstract.rsna.org/uploads/2014/14012268/14012268_wgx3.pdf

Tsai, E, Patel, M, Akiyama, E, Gan, M, Deshmukh, M, Jude, C, Uncommon but Not Forgotten: Unusual Tumors and Tumor-like Lesions of the Lung.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14012268.html