This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
A young lady presented with bilateral nodular lesions on shins. She was also found to have bilateral hilar lymphadenopathy on chest X-ray. Mantoux test reveals indurations of 5 mms. Skin biopsy would reveal: 
Select and explain. 
A. Non caeseating Granuloma, B. Vasculitis, C. Caseating Granuloma, D. Malignant cells
A: Non caeseating Granuloma
Answer: A: Non caeseating Granuloma 
Explanation: Ans. is 'a' Non caseating granulomas Skin lesions in this patient in Erythema nodosum.Erythema nodosum, bilateral hilar lymphadenopathy negative Mantoux test in strongly suggestive of sarcoidosis.Skin biopsy {or biopsy from hilar nodes, conjunctiva, lip, or spleen, intraabdominal nodes) would reveal non- caseating granulomas.