This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Interstitial Lung Disease, Subject name: Medicine
[{'content': 'Lambda - Panda sign is typically seen in- \nSelect and explain. \nA. Sarcoidosis, B. Tuberculosis, C. Histoplasmosis, D. Leishmaniasis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Sarcoidosis o Lambda sign and Panda sign on Gallium scan are typically described for sarcoidosis.o Active pulmonary and/or mediastinal sarcoidosis is gallium avid and a positive gallium scan can support the diagnosis of sarcoidosis. Typical patterns of uptake have been described as 'panda' and 'lambda'signs.y Lambda sign - Formed from increased uptake in bilateral hilar and right paratracheal nodes y Panda sign - Formed from increased uptake in the parotids and lacrimal glandso A Lambda sign in combination with a so-called Panda sign (Lambda-Panda Sign) is a highly specific pattern for sarcoidosis.# The degree of uptake typically depends on the activity of disease and gallium scan is positive only in the setting of active parenchymal disease and negative in remission", 'role': 'assistant'}]