A 14 year old boy comes to GP for routine physical exam. Vitasl are normal. Physical exam shows six light brown skin macules and patches measuring up to 3 cm in diameter distributed on the torso. Small, firm masses are felt in the subcutaneous tissues below two of hte macules. 1. What is the likely diagnosis and why? 2. The masses felt subcutaneously are associated with what structures?

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Connective tissue is the most abundant type of tissue in the body. It serves to connect and support other tissues and also has regulatory and immunologic functions. Connective tissue consists of cells, mainly fibroblasts, and an extracellular matrix (ECM).


1. A 14 year old boy comes to GP for routine physical exam. Vitasl are normal. Physical exam shows six light brown skin macules and patches measuring up to 3 cm in diameter distributed on the torso. Small, firm masses are felt in the subcutaneous tissues below two of hte macules. 1. What is the likely diagnosis and why? 2. The masses felt subcutaneously are associated with what structures?