In which disease state would you expect an increased diffusi | Figure 1

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In which disease state would you expect an increased diffusing capacity for carbon monoxide (DLCO)?

In which of the following disease states would you expect an increased diffusing capacity for carbon monoxide (DLCO)?

A. Emphysema

B. Multiple pulmonary emboli

C. Pulmonary hemorrhage

D. Pulmonary hypertension

Cases

1. 50 yo female with pulmonary hypertension secondary to pulmonary embolism complicated by pulmonary heart disease. What do you think about her ekg?](https://app.figure1.com/case-detail/0241d47f-1610-4ad3-bc2f-aee1b17b8dbd)

2. COPD patient with right upper lobe infiltrations. Clinical symptoms suggestive of pulmonary TB. Accordingly, his sputum smear for AFB is positive..](https://app.figure1.com/case-detail/061ddc3d-49c4-4ac1-97d1-0aab7a8bc3d5)

3. (Case update): Chest x-ray analysis: Male, 64 years of age. He smoked... Answer: The main finding of radiography is pulmonary hyperinflation (consistent with history and lung disease). Third image: spirometry confirming COPD.](https://app.figure1.com/case-detail/17c23e1f-76f0-4678-ac30-7c5a6a9630a0)

4. Axial CT images of the chest in a patient with BMPR2 pulmonary hypertension show multiple poorly defined ground-glass nodules throughout the lungs, each with a small central vessel. Mutations in the BMPR2 gene are the most common genetic because of pulmonary arterial hypertension. On imaging, BMPR2 pulmonary hypertension is characterized by the distinct pattern seen here.](https://app.figure1.com/case-detail/22512eeb-3d30-4168-8949-f5c8fce2cb6f)

5. A 52-year-old man presented with a 20-minute history of chest pain radiating to the left shoulder and neck, associated with dyspnea and diaphoresis. He had a history of hypertension, long-term smoking, and a sedentary lifestyle. On physical examination, bibasilar crackles were noted on lung auscultation. An electrocardiogram (ECG) was performed in the primary care setting, and the patient was promptly referred to the emergency department.](https://app.figure1.com/case-detail/ae0fe999-6875-4474-94f0-ad823dbb9b3a)

6. A 28-year-old woman presented with a 3-day history of intense pruritus over the lower back. She reported no recent travel or exposure to new environments. She cares for a small kennel with approximately eight dogs rescued from the streets. Physical examination revealed multiple small vesicles, some clustered and others scattered, predominantly involving the lumbar region and the left gluteal area.](https://app.figure1.com/case-detail/c271070f-2bc7-4052-9895-635277e1a7d5)

7. A 4-month-old male infant presented with skin lesions localized to the chin for the past 3 days. Physical examination revealed multiple small pustules with surrounding inflammatory signs on the chin, along with a few scattered papules on the chest.](https://app.figure1.com/case-detail/48f41642-b9db-4089-b120-a94ee52328de)

8. Patient in late teens presenting after a collapse, no chest pain, no previous cardiac history, no history of sudden death in family, are there any features in this ekg that would warrant further work-up or is this just a pediatric ekg?](https://app.figure1.com/case-detail/2af390e1-ace8-40ed-ba1c-98fb2d72f4c5)