Preprint Case Report Version 1 Preserved in Portico This version is not peer-reviewed

Collision Tumors of the Colon and Peritoneum: Signet-Ring Carcinoma and Granular Cell Tumor

Dorela-Codruta Lazureanu
* ORCID logo ,
Denisa Anderco
,
Sorin Dema
* ,
Aura Jurescu
ORCID logo ,
Remus Cornea
,
Octavia Vita
ORCID logo ,
Bogdan Tunescu
,
Sorina Taban
Version 1 : Received: 31 October 2023 / Approved: 1 November 2023 / Online: 2 November 2023 (06:51:32 CET)

A peer-reviewed article of this Preprint also exists.

Lazureanu, D.-C.; Anderco, D.; Dema, S.; Jurescu, A.; Cornea, R.; Vita, O.; Tunescu, B.; Taban, S. Collision Tumors of the Colon and Peritoneum: Signet-Ring Cell Carcinoma and Granular Cell Tumor. Life 2023, 13, 2263. Lazureanu, D.-C.; Anderco, D.; Dema, S.; Jurescu, A.; Cornea, R.; Vita, O.; Tunescu, B.; Taban, S. Collision Tumors of the Colon and Peritoneum: Signet-Ring Cell Carcinoma and Granular Cell Tumor. Life 2023, 13, 2263.

Abstract

Collision tumors, even uncommon, characterized by two distinctive (morphological, as well immunohistochemical) and spatially independent tumor components in the same location, are always puzzling for clinicians, pathologists and patients because they don’t fit in usual approaching schemes, neither diagnostic, nor therapeutic. Reviewing the specialized literature, until now, collision tumors have been reported in multiple locations such as the skin, esophagus, stomach, liver, kidney, bladder, adrenal gland or thyroid. We report a case of coexistence on the same site of a malignant tumor of ascending colon and a benign one emerging from peritoneal lining, thought initially by the surgeon to be right sided serosal carcinomatosis. But the histopatological examination reveals that those multiple serosal nodules were benign granular cell tumors collided with highly aggressive transparietal signet-ring colon carcinoma. These results put the patient's prognosis and therapeutic strategy in a different light than the clinical-imaging and intraoperative assessment.

Keywords

abdominal collision tumors; colon signet-ring carcinoma; peritoneal granular cell tumor

Subject

Medicine and Pharmacology, Gastroenterology and Hepatology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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