47. A patient presents to the primary care clinic complaining of a dry cough, dyspnea, chest pain, fever, fatigue, anorexia, weight loss, chills, and night sweats. The advanced practice registered nurse (APRN) notes the following: bilateral hilar lymphadenopathy and parenchymal interstitial infiltrates on CXR; elevated serum level of angiotensin-converting enzyme; elevated erythrocyte sedimentation rate. Which diagnosis should the APRN suspect?
Answer: A
Sarcoidosis is the diagnosis the APRN should suspect.
The patient's symptoms and imaging findings strongly suggest sarcoidosis, characterized by bilateral hilar lymphadenopathy, elevated serum angiotensin-converting enzyme levels, and interstitial lung infiltrates.
A) Sarcoidosis
Sarcoidosis is a granulomatous disease that commonly presents with respiratory symptoms such as dry cough and dyspnea. The presence of bilateral hilar lymphadenopathy and elevated angiotensin-converting enzyme levels further supports this diagnosis, as these findings are typical in sarcoidosis.
B) Hodgkin's lymphoma
While Hodgkin's lymphoma can cause similar symptoms such as fever and weight loss, it typically presents with lymphadenopathy that may not be confined to the hilar region. The specific findings of elevated angiotensin-converting enzyme and the nature of the lung infiltrates are more indicative of sarcoidosis than Hodgkin's lymphoma.
C) Systemic lupus erythematosus
Systemic lupus erythematosus (SLE) can lead to a variety of symptoms, including pulmonary involvement, but it does not classically show elevated angiotensin-converting enzyme levels or specific radiographic findings like bilateral hilar lymphadenopathy. The clinical presentation does not align closely with SLE.
D) Pulmonary hypertension
Pulmonary hypertension can cause dyspnea and fatigue, but it would not typically present with the systemic symptoms of fever, chills, and night sweats, nor with the specific radiographic findings. The elevated angiotensin-converting enzyme levels and interstitial lung infiltrates are not characteristic of pulmonary hypertension.
Conclusion
The findings presented in this case—particularly the combination of dry cough, bilateral hilar lymphadenopathy, elevated serum angiotensin-converting enzyme levels, and interstitial infiltrates—are highly indicative of sarcoidosis. Other conditions listed do not adequately explain the complete clinical picture, making sarcoidosis the most plausible diagnosis in this scenario.