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Thursday
Nov012018

November 2018 Imaging Case of the Month: Respiratory Failure in a 36-Year-Old Woman

Michael B. Gotway, MD

Department of Radiology

Mayo Clinic Arizona

Scottsdale, AZ USA

 

Imaging Case of the Month CME Information  

Completion of an evaluation form is required to receive credit and a link is provided on the last panel of the activity.

0.50 AMA PRA Category 1 Credit(s)™

Estimated time to complete this activity: 0.75 hours

Lead Author(s): Michael B. Gotway, 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 completing this activity, participants will be better able to:

  1. Interpret and identify clinical practices supported by the highest quality available evidence.
  2. Establish the optimal evaluation leading to a correct diagnosis for patients with pulmonary, critical care and sleep disorders.
  3. Translate the most current clinical information into the delivery of high quality care for patients.
  4. Integrate new treatment options 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 the Arizona Health Sciences Center.

Current Approval Period: January 1, 2017-December 31, 2018

 

Clinical History: A 36–year old woman presented with complaints of shortness of breath and worsening dyspnea on exertion. She had a reported history of central nervous system vasculitis of uncertain etiology, treated with azathioprine and prednisone currently, and cyclophosphamide in the past. Her symptoms reportedly responded well to this regimen. Her diagnosis of central nervous system vasculitis was established 6 months earlier when the patient presented with upper extremity paresthesia, headache, left arm weakness, diplopia, and a right eye visual field deficit, evidently with brain imaging showing some pathologic changes, although those records were not available at her presentation. Reportedly she responded well to her immunosuppressive therapy and her steroid and azathioprine doses had been tapered accordingly. Her past medical history was otherwise remarkable for a history of migraine headaches, depression, childhood asthma, hemorrhagic cystitis due to cyclophosphamide (which prompted discounting this drug in favor of azathioprine for the purported central nervous system vasculitis) in the past, and endometriosis.

The patient is a former smoker for a total of 5 pack-years, quitting years previously. She is the mother of a 3-year-old child. The patient denied alcohol and drug use. A history of penicillin allergy was elicited. In addition to azathioprine and prednisone, her medications included inhaled budesonide, Bactrim, escitalopram, topiramate, and sumatriptan/naproxen sodium as well as a multivitamin. There was some history of fenfluramine/phentermine (“Fen-Fen”) use years earlier.

Her physical examination was largely unremarkable. The patient complained of head pain and was visibly mildly dyspneic, but her lungs were clear and no abnormal heart sounds were detected. Her extremities appeared normal- no ecchymosis, cyanosis, or clubbing was detected. She did have some prior history suggesting the presence of erythema nodosum, now presenting as an erythematous region on the right lower extremity, which underwent biopsy, although changes characteristic of erythema nodosum were not present at her current examination. Reportedly this region had been injured when she bumped the right lower extremity on a chair, and this injury evidently became infected, requiring drainage, yielding cultures positive for Staphylococcus aureus and, about 1 month later, Actinomyces israelii. Her vital signs should normal pulse rate and blood pressure, breathing at 26 breaths / minute. Her room air oxygen saturation was 93%.

Frontal and lateral chest radiography (Figure 1) was performed.

Figure 1. Frontal (A) and lateral (B) chest radiography.

Which of the following represents the most accurate assessment of the chest radiographic findings? (Click on the correct answer to be directed to the second of twelve pages)

  1. Chest radiography shows basilar fibrotic opacities
  2. Chest radiography shows bilateral pleural effusions
  3. Chest radiography shows cavitary pulmonary lesions
  4. Chest radiography shows marked cardiomegaly
  5. Chest radiography shows numerous small nodular opacities

Cite as: Gotway MB. November 2018 imaging case of the month: Respiratory failure in a 36-year-old woman. Southwest J Pulm Crit Care. 2018;17(5):119-33. doi: https://doi.org/10.13175/swjpcc114-18 PDF

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