<prompt> Which is not a component of Lofgren syndromeErythema nodosumBilateral hilar enlargementJoint symptomsFacial palsy  <response>: Lofgrens syndrome consists of erythema nodosum and hilar adenopathy on chest roentgenogram. In some cases, periaicular ahritis may be identified without erythema nodosum. Lofgrens syndrome is associated with a good prognosis, with 90 of patients experiencing disease resolution within 2years.Heerfordt - Uveoparotid fever with facial palsyReference: Harrison;s Principles of Internal Medicine; 19th edition; Chapter 390; Sarcoidosis 