Sarcoidosis: a review for the internist

Area of Science:

• Pulmonology
• Immunology
• Internal Medicine

Background:

• Sarcoidosis is a systemic granulomatous disease of unknown etiology, primarily affecting young adults.
• It presents with diverse phenotypes and an unpredictable clinical course, with approximately 20% of patients developing chronic progressive disease and potential lung fibrosis.
• While commonly involving the lungs and thoracic lymph nodes, sarcoidosis can manifest in multiple extrapulmonary organs, including skin, eyes, heart, and the nervous system.

Purpose of the Study:

• To review the current diagnostic strategies for sarcoidosis.
• To highlight the importance of a multidisciplinary approach in managing sarcoidosis.
• To outline the internist's role in identifying disease manifestations and managing complications.

Main Methods:

• Review of existing literature on sarcoidosis diagnosis and management.
• Emphasis on multidisciplinary team involvement, including internists, pulmonologists, and other specialists.
• Discussion of diagnostic criteria, including histological confirmation and presumptive diagnosis in specific contexts.

Main Results:

• Sarcoidosis diagnosis lacks reliable prognostic indicators and definitive serological biomarkers.
• Histological confirmation is generally required, though presumptive diagnoses are sometimes acceptable.
• A comprehensive diagnostic approach involves identifying all pulmonary and extrapulmonary disease sites.

Conclusions:

• Effective sarcoidosis management necessitates a collaborative, multidisciplinary team effort.
• The internist plays a crucial role in coordinating care, identifying disease extent, and managing comorbidities.
• Further research is needed for reliable diagnostic and prognostic biomarkers in sarcoidosis.