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19 June 2020 : Case report  Saudi Arabia

Two Histologically Different Primary Malignancies: Synchronous Obstructive Descending Colon Adenocarcinoma and Appendicular Carcinoid Tumor

Unusual clinical course, Management of emergency care, Rare coexistence of disease or pathology

Turki Alshammari1AE, Sulaiman Alshammari1AEF*, Riyadh Hakami1A, Mohammed Alali1A, Tariq Aljohani2B, Mohammed Ayesh Zayed3BE, Thamer Bin Traiki1AE

DOI: 10.12659/AJCR.921810

Am J Case Rep 2020; 21:e921810


BACKGROUND: Synchronous primary tumors are defined as 2 or more different histological tumors discovered in one patient at the same time or within a period of 6 months. Colorectal cancer is one of the most common cancers in the United States. Inversely, synchronous colorectal cancer and carcinoid tumors are rare. Carcinoid tumors can be classified into functioning and non-functioning tumors. Carcinoid tumors are steadily increasing in incidence. There is only 1 case reported in the literature as synchronous colorectal cancer and appendicular carcinoid. The difficulty is to manage 2 different types of malignancies at the same time. An optimal medical or chemotherapy strategy is needed.

CASE REPORT: A 29-year-old woman presented to the emergency room carrying with her computerized tomography (CT) abdomen and pelvic images showing bowel obstruction. Investigations confirmed an obstructing descending colon mass. She underwent colonoscopic stenting as emergency treatment with multiple biopsies. The pathology report came back positive for adenocarcinoma, and we planned to proceed with surgery. Intraoperatively, she was found to have an appendicular mass. The surgical team decided to proceed with laparoscopic-assisted subtotal colectomy. The postoperative course was uneventful, with no complications. The patient was discharged on postoperative day 6 in stable condition.

CONCLUSIONS: Synchronous colorectal cancer and carcinoid tumors are rare malignancies. The challenge is to find an optimal medical or chemotherapy strategy to manage both malignancies.

Keywords: Appendiceal Neoplasms, Carcinoid Tumor, Neoplasms, Multiple Primary



11 January 2022 : Case report  Oman

Myocarditis, Pulmonary Hemorrhage, and Extensive Myositis with Rhabdomyolysis 12 Days After First Dose of P...

Am J Case Rep In Press; DOI: 10.12659/AJCR.934399  

12 January 2022 : Case report  USA

Guillain-Barré Syndrome After Ad26.COV2.S Vaccination

Am J Case Rep In Press; DOI: 10.12659/AJCR.935275  

10 January 2022 : Case report  Philippines

Pulmonary Function and Chest Computed Tomography (CT) Scan Findings After Antifibrotic Treatment for COVID-...

Am J Case Rep In Press; DOI: 10.12659/AJCR.934830  

07 January 2022 : Case report  Saudi Arabia

Extensive Cerebral Venous Sinus Thrombosis (CVST) After the First Dose of Pfizer-BioNTech BNT162b2 mRNA COV...

Am J Case Rep In Press; DOI: 10.12659/AJCR.934744  

In Press

17 Jan 2022 : Case report  Latvia

Implication of Genetic Testing and Pregnancy Outcome in a Woman with Unbalanced Translocation t(1;6)

Am J Case Rep In Press; DOI: 10.12659/AJCR.935370  

17 Jan 2022 : Case report  USA

Laparoscopic Enterolysis of Congenital Band Precipitating Pathogenic Heterotopic Mesenteric Ossification Re...

Am J Case Rep In Press; DOI: 10.12659/AJCR.934910  

17 Jan 2022 : Case report  Belgium

Successful Crossing of Complex Radial and Brachial Artery Anatomy Using a New Approach: Railtracking

Am J Case Rep In Press; DOI: 10.12659/AJCR.934760  

14 Jan 2022 : Case report  Palestinian Territory, Occupied

Successful Treatment for Isolated Bone Marrow Hodgkin Lymphoma in an Human Immunodeficiency Virus (HIV)-Neg...

Am J Case Rep In Press; DOI: 10.12659/AJCR.935045  

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DOI :10.12659/AJCR.935263

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923