Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature

Low-grade appendiceal mucinous neoplasms (LAMNs) may lead to pseudomyxoma peritonei and require specialized surgical therapy. By pathological definition, these tumor entities exhibit neither invasive growth nor develop systemic or lymph node metastases. We report the case of a 43-year-old female pre...

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Main Authors: P. Meister, J. Rawitzer, M. Reschke, H.A. Baba, U. Neumann, M. Kaths
Format: Article
Language:English
Published: Elsevier 2025-06-01
Series:Current Problems in Cancer: Case Reports
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Online Access:http://www.sciencedirect.com/science/article/pii/S266662192500016X
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author P. Meister
J. Rawitzer
M. Reschke
H.A. Baba
U. Neumann
M. Kaths
author_facet P. Meister
J. Rawitzer
M. Reschke
H.A. Baba
U. Neumann
M. Kaths
author_sort P. Meister
collection DOAJ
description Low-grade appendiceal mucinous neoplasms (LAMNs) may lead to pseudomyxoma peritonei and require specialized surgical therapy. By pathological definition, these tumor entities exhibit neither invasive growth nor develop systemic or lymph node metastases. We report the case of a 43-year-old female presenting with a metachronous splenic metastasis of low-grade pseudomyxoma peritonei four years after surgical therapy. The patient was treated successfully via laparoscopic splenectomy. While the spleen itself is an extremely rare location for metastasizing colonic cancer, a LAMN metastasis in this location has not been previously described. A literature review of pseudomyxoma recurrence reveals that LAMNs might indeed recur in extraperitoneal locations, questioning their pathophysiological definition of non-metastasizing behavior.
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publishDate 2025-06-01
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series Current Problems in Cancer: Case Reports
spelling doaj-art-d7812fc649c444e29404ba4a032f4f192025-08-20T02:49:55ZengElsevierCurrent Problems in Cancer: Case Reports2666-62192025-06-011810036410.1016/j.cpccr.2025.100364Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literatureP. Meister0J. Rawitzer1M. Reschke2H.A. Baba3U. Neumann4M. Kaths5University Hospital Essen, Germany, Department of General-, Visceral-, Vascular-, and Transplantation Surgery, Hufelandstr. 55, 45147 Essen, Germany; Corresponding author.University Hospital Essen, Germany, Institute of Pathology, Hufelandstr. 55, 45147 Essen, GermanyUniversity Hospital Essen, Germany, Department of General-, Visceral-, Vascular-, and Transplantation Surgery, Hufelandstr. 55, 45147 Essen, GermanyUniversity Hospital Essen, Germany, Institute of Pathology, Hufelandstr. 55, 45147 Essen, GermanyUniversity Hospital Essen, Germany, Department of General-, Visceral-, Vascular-, and Transplantation Surgery, Hufelandstr. 55, 45147 Essen, GermanyUniversity Hospital Essen, Germany, Department of General-, Visceral-, Vascular-, and Transplantation Surgery, Hufelandstr. 55, 45147 Essen, GermanyLow-grade appendiceal mucinous neoplasms (LAMNs) may lead to pseudomyxoma peritonei and require specialized surgical therapy. By pathological definition, these tumor entities exhibit neither invasive growth nor develop systemic or lymph node metastases. We report the case of a 43-year-old female presenting with a metachronous splenic metastasis of low-grade pseudomyxoma peritonei four years after surgical therapy. The patient was treated successfully via laparoscopic splenectomy. While the spleen itself is an extremely rare location for metastasizing colonic cancer, a LAMN metastasis in this location has not been previously described. A literature review of pseudomyxoma recurrence reveals that LAMNs might indeed recur in extraperitoneal locations, questioning their pathophysiological definition of non-metastasizing behavior.http://www.sciencedirect.com/science/article/pii/S266662192500016XLow grade mucinous neoplasmLAMNPseudomyxoma peritonei appendixSpleenMetastasisCase report
spellingShingle P. Meister
J. Rawitzer
M. Reschke
H.A. Baba
U. Neumann
M. Kaths
Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
Current Problems in Cancer: Case Reports
Low grade mucinous neoplasm
LAMN
Pseudomyxoma peritonei appendix
Spleen
Metastasis
Case report
title Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
title_full Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
title_fullStr Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
title_full_unstemmed Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
title_short Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
title_sort intrasplenic metastasis of appendiceal low grade mucinous neoplasm a case report and review of the literature
topic Low grade mucinous neoplasm
LAMN
Pseudomyxoma peritonei appendix
Spleen
Metastasis
Case report
url http://www.sciencedirect.com/science/article/pii/S266662192500016X
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