A rare case of isolated IgG4-related hypophysitis with Rathke's cleft cyst presenting as panhypopituitarism.

Isolated IgG4 hypophysitis and coexisting Rathke's cleft cyst is a rare condition, which presents a diagnostic challenge. Recognizing its characteristic features can assist with early recognition and initiation of therapy to promote optimal outcomes. Further studies investigating the mechanisms promoting co-occurrence of these entities and their effect on prognosis are needed.