Procedure: Right hemicolectomy
Tumor Site: Appendix, with contiguous involvement of the cecal base.
Tumor Size: 5.7x 5 x 4.5 cm.
Histologic Type: Adenocarcinoma with possible neuroendocrine differentiation.
Histologic Grade: Pending for marker study.
Tumor Extension: Tumor penetrates the visceral peritoneum
Margins: Uninvolved.
Lymphovascular Invasion: Present.
Perineural Invasion: Not identified.
Regional Lymph Nodes:
Pathologic Stage Classification (AJCC 8th Edition):
Rt. hemicolectomy for adenocarcinoma.
Radiologically: complex cystic lesion in the right iliac fossa involving the cecal base—radiologically suspicious for an appendicular phlegmon versus an appendiceal mucocele tumor.
Received was a right hemicolectomy specimen consisting of a terminal ileum that measured 5 x 1.5 cm with an attached, adherent appendix that measured 2.5 cm. The cecum and ascending colon measured 15 x 2 cm. The attached omentum measured 25 x 17 x 2 cm, and the attached fat measured 15 x 8.5 cm. Opening revealed an irregular, ulcerating, creamy-colored mass that measured 4.5 x 5 x 4 cm. The mass was located 5.5 cm away from one end and 10 cm away from the other end.
Dissection of mesenteric fat revealed 15 lymph nodes, the largest of which measured 2.5 cm.
Appendix, Right Hemicolectomy: