label: Signet Ring Cell/Histiocytoid Carcinoma
label_lc: signet ring cell/histiocytoid carcinoma
description: "A rare aggressive adnexal carcinoma preferentially affecting the eyelid and histopathologically resembling a metastatic lobular carcinoma of the breast and/or some adenocarcinomas arising in the gastrointestinal tract. (WHO 2018)"