MUC5AC and inflammatory breast carcinoma: As per the latest guidelines [1], the histopathological diagnoses were one case of mixed mucinous carcinoma with IMPC grade 1 (case 1), two cases of mixed IBC-NST with mucin production and IMPC grades 2 and 3 (cases 2 and 3), and one case of pure IMPC grade 3, in an elderly male (case 4).