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April 2016 Pulmonary Case of the Month

Lewis J. Wesselius, MD

Rodrigo Cartin-Ceba, MD 


Department of Pulmonary Medicine

Mayo Clinic Arizona

Scottsdale, AZ


Pulmonary Case of the Month CME Information

Members of the Arizona, New Mexico, Colorado and California Thoracic Societies and the Mayo Clinic are able to receive 0.25 AMA PRA Category 1 Credits™ for each case they complete. Completion of an evaluation form is required to receive credit and a link is provided on the last panel of the activity. 

0.25 AMA PRA Category 1 Credit(s)™

Estimated time to complete this activity: 0.25 hours

Lead Author(s): Lewis J. Wesselius, MD.  All Faculty, CME Planning Committee Members, and the CME Office Reviewers have disclosed that they do not have any relevant financial relationships with commercial interests that would constitute a conflict of interest concerning this CME activity.

Learning Objectives:
As a result of this activity I will be better able to:

  1. Correctly interpret and identify clinical practices supported by the highest quality available evidence.
  2. Will be better able to establsh the optimal evaluation leading to a correct diagnosis for patients with pulmonary, critical care and sleep disorders.
  3. Will improve the translation of the most current clinical information into the delivery of high quality care for patients.
  4. Will integrate new treatment options in discussing available treatment alternatives for patients with pulmonary, critical care and sleep related disorders.

Learning Format: Case-based, interactive online course, including mandatory assessment questions (number of questions varies by case). Please also read the Technical Requirements.

CME Sponsor: University of Arizona College of Medicine at Banner University Medical Center Tucson

Current Approval Period: January 1, 2015-December 31, 2016

Financial Support Received: None


History of Present Illness

The patient is a 75-year-old woman who presented with a chest mass incidentally found on chest x-ray. She was asymptomatic

Past Medical History, Social History and Family History

She has no significant past medical history and has never smoked. Family history is noncontributory.

Physical Examination

Physical examination was unremarkable.


A thoracic CT scan was performed (Figure 1).

Figure 1. Representative thoracic CT scan in soft tissue windows showing  a mass (arrow).

Which of the following are possible causes of the mass? (Click on the correct answer to proceed to the second of four panels)

  1. Lymphoma
  2. Teratoma
  3. Thymoma
  4. Thyroid carcinoma
  5. All of the above 

Cite as: Wesselius LJ, Cartin-Ceba R. April 2016 pulmonary case of the month. Southwest J Pulm Crit Care. 2016 Apr;12(4):126-9. doi: PDF 

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