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Case Reports
. 2020 Mar 23:2020:6935834.
doi: 10.1155/2020/6935834. eCollection 2020.

Mesenteric Lymph Node Recurrence of a Primary Colorectal Leiomyosarcoma

Affiliations
Case Reports

Mesenteric Lymph Node Recurrence of a Primary Colorectal Leiomyosarcoma

Amélie Beauchamp et al. Case Rep Surg. .

Abstract

Primary colorectal leiomyosarcoma is an excessively rare entity. It is associated with an aggressive behavior and typically favor hematogenous spread. The current standard of care is surgical resection. A 49-year-old patient presented with a 2-month history of fever. A PET-scan revealed a hypermetabolic mass in the transverse colon, and colonoscopy confirmed a tumor. A right hemicolectomy was performed. Histopathological diagnosis was of a leiomyosarcoma. Fourteen months after the surgery, a follow-up abdominal scan revealed a 2 cm mesenteric lymph node that was hypermetabolic on PET-scan. The mesenteric lymph node was resected and histopathology confirmed a leiomyosarcoma metastasis. This case opens the controversy on the management of rare lymph node recurrences in colorectal leiomyosarcoma.

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Conflict of interest statement

The authors declare that they have no conflicts of interest.

Figures

Figure 1
Figure 1
Transverse colon mass seen on abdominoplevic scan and PET-scan (FDG).
Figure 2
Figure 2
Transverse colon mass during colonoscopy.
Figure 3
Figure 3
Follow-up abdominoplevic CT scan revealing a suspicious enlarged 2 cm mesenteric lymph node and PET-scan showing a high FDG uptake of the enlarged mesenteric lymph node.
Figure 4
Figure 4
Hematoxylin and eosin stain, enlarged 20x, lymph node infiltrated with tumor cells and hematoxylin and eosin stain, enlarged 100x, findings suggestive of leiomyosarcoma found within the mesenteric lymph node.
Figure 5
Figure 5
Hematoxylin and eosin stain, enlarged 100x, vascular involvement of the tumor within the mesenteric lymph node.

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