Severe Menorrhagia as the Initial Presentation of Myxedema Coma With Pericardial Effusion. - Penaherrera, Carlos Andres; Abualnil, Aseel; Torrontegui, Jacqueline S Martins; Sidhu, Punerdeep Singh; Hamad, Ibrahim; Bhalodia, Ami (JCEM Case Reports, 2025)