Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report

There are very few reports of gastric cancer (GC) and gastrointestinal stromal tumor (GIST) occurring at the same time in the literature. In particular, the collision of GIST and human epidermal growth factor receptor-2 (HER-2)-positive gastric carcinoma in a patient with Waldenström macroglobulinem...

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Main Authors: Yingming Jin, Zhilong Shi, Kesang Li, Tianjiao Liu, Zhi Fang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-05-01
Series:Frontiers in Oncology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fonc.2025.1554206/full
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author Yingming Jin
Zhilong Shi
Kesang Li
Tianjiao Liu
Zhi Fang
author_facet Yingming Jin
Zhilong Shi
Kesang Li
Tianjiao Liu
Zhi Fang
author_sort Yingming Jin
collection DOAJ
description There are very few reports of gastric cancer (GC) and gastrointestinal stromal tumor (GIST) occurring at the same time in the literature. In particular, the collision of GIST and human epidermal growth factor receptor-2 (HER-2)-positive gastric carcinoma in a patient with Waldenström macroglobulinemia (WM) has never been reported. We report the case of an 80-year-old male who initially presented with dizziness with fatigue for more than 1 month. He underwent total gastrectomy. Pathology revealed GC (moderately to poorly differentiated tubular adenocarcinoma), GIST (low-risk category) and low-grade small B-cell lymphoma with plasmacytoid differentiation. Furthermore, the diagnosis of WM was made after cytomorphologic and immunohistochemical analysis of the patient’s bone marrow revealed the presence of lymphoplasma cells along with the MYD88 L265P mutation and an increased level of serum monoclonal immunoglobulin M (IgM). To our knowledge, this is the first case of such an association where WM occurred with concomitant HER2-positive gastric adenocarcinoma and gastric GIST. A review of the literature concerning the incredibly uncommon simultaneous triple incidence of malignant tumors with distinct histogenesis is presented below.
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series Frontiers in Oncology
spelling doaj-art-077a2d5d2ee24e76b94076dd41368fc32025-08-20T02:31:00ZengFrontiers Media S.A.Frontiers in Oncology2234-943X2025-05-011510.3389/fonc.2025.15542061554206Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case reportYingming JinZhilong ShiKesang LiTianjiao LiuZhi FangThere are very few reports of gastric cancer (GC) and gastrointestinal stromal tumor (GIST) occurring at the same time in the literature. In particular, the collision of GIST and human epidermal growth factor receptor-2 (HER-2)-positive gastric carcinoma in a patient with Waldenström macroglobulinemia (WM) has never been reported. We report the case of an 80-year-old male who initially presented with dizziness with fatigue for more than 1 month. He underwent total gastrectomy. Pathology revealed GC (moderately to poorly differentiated tubular adenocarcinoma), GIST (low-risk category) and low-grade small B-cell lymphoma with plasmacytoid differentiation. Furthermore, the diagnosis of WM was made after cytomorphologic and immunohistochemical analysis of the patient’s bone marrow revealed the presence of lymphoplasma cells along with the MYD88 L265P mutation and an increased level of serum monoclonal immunoglobulin M (IgM). To our knowledge, this is the first case of such an association where WM occurred with concomitant HER2-positive gastric adenocarcinoma and gastric GIST. A review of the literature concerning the incredibly uncommon simultaneous triple incidence of malignant tumors with distinct histogenesis is presented below.https://www.frontiersin.org/articles/10.3389/fonc.2025.1554206/fullWaldenström macroglobulinemiagastric adenocarcinomagastrointestinal stromal tumor (GIST)human epidermal growth factor receptor-2 (HER-2)synchronous occurrence
spellingShingle Yingming Jin
Zhilong Shi
Kesang Li
Tianjiao Liu
Zhi Fang
Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report
Frontiers in Oncology
Waldenström macroglobulinemia
gastric adenocarcinoma
gastrointestinal stromal tumor (GIST)
human epidermal growth factor receptor-2 (HER-2)
synchronous occurrence
title Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report
title_full Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report
title_fullStr Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report
title_full_unstemmed Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report
title_short Synchronous occurrence of Waldenström macroglobulinemia and HER2-positive gastric adenocarcinoma with gastrointestinal stromal tumor: a rare case report
title_sort synchronous occurrence of waldenstrom macroglobulinemia and her2 positive gastric adenocarcinoma with gastrointestinal stromal tumor a rare case report
topic Waldenström macroglobulinemia
gastric adenocarcinoma
gastrointestinal stromal tumor (GIST)
human epidermal growth factor receptor-2 (HER-2)
synchronous occurrence
url https://www.frontiersin.org/articles/10.3389/fonc.2025.1554206/full
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