“…1 [2], PNP has now been recognized as a multisystem disorder and renamed as paraneoplastic autoimmune Multiorgan syndrome [3]. Although virtually any mucosa may be involved, painful oral erosions are the earliest and a hallmark feature and its absence argues against a diagnosis of PNP [4]. Polymorphous cutaneous lesions follows mucosal involvement (although isolated mucosal disease has been described) and may resemble PV, Pemphigus foliaceus (PF), Bullous Pemphigoid (BP), lichen planus (LP), Steven-Johnson's syndrome (SJS), Graft-versus-host disease (GVHD) and herpes stomatitis [1,5].…”