This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Integrated QBank, Subject name: Unknown
A 55-year-old female presented to the ER with sudden onset of shoness of breath along with syncope. Chest x ray was unremarkable. ECG was done. On examination, some skin lesions were observed. What is the most likely diagnosis in the above case: - 
Select and explain. 
A. Carney syndrome, B. Hypothyroidism, C. Sarcoidosis, D. SLE
C: Sarcoidosis
Answer: C: Sarcoidosis 
Explanation: This is a case of sarcoidosis. ECG shows complete hea block. Skin lesions shows erythema nodosum. Extrapulmonary sarcoidosis manifests as: - Conduction defects Joint lesions Hypercalcemia Neurological defects Hypothyroidism usually doesn't cause complete hea block. Carney syndrome is characterised by multiple lentigines and atrial myxomata. SLE may be associated with Erythema nodosum but doesn't cause complete hea block in adults.