Metastatic invasive lobular breast cancer presenting as linitis plastica of the colon: Tumour characterization using [¹⁸F]FES PET/MRI

Metastatic invasive lobular breast cancer (ILC) to the colon is rare and usually ER‐positive. We present an ER‐negative case of metastatic ILC presenting as linitis plastica of the colon where [ 18 F]FES PET/MRI allowed the evaluation of the ER phenotypic transformation in the colonic metastasis from the ER‐positive breast ILC in vivo...