“…In 61% of patients < 50 years (Kneuertz et al ., ) and up to 76% of patients < 30 years (Indini et al ., ; Kam et al ., ; Khan et al ., ), CRC is diagnosed as stage III or IV, strikingly different from older CRC patients (46–50% diagnosed as stage III or IV; Ferrari et al ., ; Khan et al ., ; Kneuertz et al ., ). EO‐CRCs are more frequently poorly differentiated G3 tumors, left‐sided and rectal (Chang et al ., ; Indini et al ., ; Kam et al ., ; Khan et al ., ; Kneuertz et al ., ; Sultan et al ., ; Wang et al ., ). Signet ring cell CRC, accounting for < 1% of all CRC, among younger patients account for 3–13% of cases, especially in those younger than 30 years (Chang et al ., ; Khan et al ., ; Kneuertz et al ., ; Wang et al ., ; Yantiss et al ., ).…”