English: Gallium scan showing panda (A) and lambda (B) patterns The “panda pattern” shows salivary gland uptake, and mediastinal and hilar node uptake leads to the “lambda pattern”. Both of these are considered specific for Sarcoidosis in the absence of histological confirmation. The problem is that this pattern, whilst highly specific, is not sensitive, leading potentially to an underreporting of patients who may nonetheless have the disease.