Sarcoidosis with Severe Bone Involvement: A Case Report and Literature Review.

Sarcoidosis is a systemic granulomatous disease of the lungs that commonly involves intrathoracic lymph nodes. Here, we report the case of a 68-year-old woman who complained of shortness of breath and had suffered from the enlargement of intrathoracic lymph nodes for 12 years, swelling of the right middle finger for 7 years, and nasal obstruction for 2 years. The damage to the phalange was aggravated continuously and a malignant lesion could not be excluded, thus leading to amputation of the right middle finger. Pathological data indicated chronic inflammatory granulomatous disease and anti-acid staining was negative. Examination of the paranasal sinuses indicated destruction of the sinonasal bone and the swollen mucosa. Combined with the elevated ratio of CD4+/CD8+ T cells in bronchoalveolar lavage fluid and other results, the patient was finally diagnosed with sarcoidosis and received corticosteroid therapy. The shortness of breath and abnormality of the nose were significantly improved after treatment. Our case demonstrated the process of differential diagnosis for systemic granulomatous diseases, indicating the necessity of corticosteroid therapy for systematic sarcoidosis.