[24.04.02-EGD Bx, 외래]stomach fiberscopic biopsy : Signet ring cell carcinoma [24.04.24-subtotal gastrectomy, 입원]  EARLY GASTRIC CARCINOMA    1) Preoperative treatment: not done    2) Location of tumor      a) Involvement: lower third          b) Center at body, lesser curvature   3) Gross type: 0-IIc      4) Histologic type by WHO: mucinous adenocarcinoma composed exclusively        of signet ring cells   5) Histologic grade by WHO: not applicable   6) Histologic type by Lauren: diffuse     7) Tumor size: 4.0 x 2.8 x 0.2 cm   8) Depth of invasion: submucosa (sm2) (pT1b by AJCC 8th Ed.)      a) Depth of submucosal invasion: 900 μm	   9) Surgical margins: free from tumor      (safety margin: proximal: 2.2 cm; distal: 6.5 cm)                       10) Lymph node: no metastasis in 39 regional lymph nodes (pN0)       (LN #1: 0/8, LN #3: 0/3, LN #4: 0/6, LN #5: 0/3, LN #6: 0/2,        LN #7: 0/3, LN #8: 0/4, LN #9: 0/2, LN #11: 0/4, LN #12: 0/1,        lesser curvature: 0/3)   11) Poorly differentiated or poorly cohesive component: present (100%)   12) Lymphovascular invasion: not identified  13) Perineural invasion: not identified   14) Stromal reaction: absent	  15) Preexisting adenoma: not identified  16) Associated findings: none위와 같이 나온경우 수술 후 M코드를 부여하고자 할 때 M8480(Mucinous adenocarcinoma) 로 부여해야할지M8490(Signet ring cell carcinoma)으로 부여해야하는지 문의드립니다.
M8480(Mucinous adenocarcinoma)으로 등록합니다.