A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium

Abstract Background Gastrointestinal stromal tumors (GISTs), which are the most common soft tissue tumors of the gastrointestinal tract, originate from Cajal interneurons. The main metastatic sites of GISTs are the liver and intra-abdominal cavity, and metastasis to the heart is rare. Case presentat...

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Main Authors: Tadashi Takasaki, Takashi Tsuji, Shogo Nakayama
Format: Article
Language:English
Published: Japan Surgical Society 2022-04-01
Series:Surgical Case Reports
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Online Access:https://doi.org/10.1186/s40792-022-01433-6
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author Tadashi Takasaki
Takashi Tsuji
Shogo Nakayama
author_facet Tadashi Takasaki
Takashi Tsuji
Shogo Nakayama
author_sort Tadashi Takasaki
collection DOAJ
description Abstract Background Gastrointestinal stromal tumors (GISTs), which are the most common soft tissue tumors of the gastrointestinal tract, originate from Cajal interneurons. The main metastatic sites of GISTs are the liver and intra-abdominal cavity, and metastasis to the heart is rare. Case presentation The patient was a 78-year-old man who was diagnosed with a rectal GIST 20 years previously. Since then, he had undergone repeated operations for metastasis. A follow-up thoracoabdominal computed tomography scan 4 months prior to the operation revealed GIST metastasis to the left ventricular myocardium. The patient wanted the tumor removed and consequently underwent an operation. The surgical findings showed a 3-cm × 3-cm mass in the lateral wall of the left ventricle. The mass was resected from the left ventricular wall in the shape of a tear drop. The left ventricular cavity was closed with a 4–0 polypropylene mattress suture and continuous suture. Postoperative histopathological findings showed nodular tumor growth consisting of bundles of spindle-shaped cells in the myocardium. The margins were negative. Immunostaining showed c-KIT (CD17) positivity and CD34 positivity, consistent with GIST metastasis. Conclusions This case involved GIST metastasis to the heart muscle, which has rarely been reported worldwide.
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spelling doaj-art-7a408e7185a64f77ab8a996be6a3905d2025-08-20T03:33:49ZengJapan Surgical SocietySurgical Case Reports2198-77932022-04-01811410.1186/s40792-022-01433-6A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardiumTadashi Takasaki0Takashi Tsuji1Shogo Nakayama2Department of Cardiovascular Surgery, Japanese Red Cross Osaka HospitalDepartment of Cardiovascular Surgery, Japanese Red Cross Osaka HospitalDepartment of Cardiovascular Surgery, Japanese Red Cross Osaka HospitalAbstract Background Gastrointestinal stromal tumors (GISTs), which are the most common soft tissue tumors of the gastrointestinal tract, originate from Cajal interneurons. The main metastatic sites of GISTs are the liver and intra-abdominal cavity, and metastasis to the heart is rare. Case presentation The patient was a 78-year-old man who was diagnosed with a rectal GIST 20 years previously. Since then, he had undergone repeated operations for metastasis. A follow-up thoracoabdominal computed tomography scan 4 months prior to the operation revealed GIST metastasis to the left ventricular myocardium. The patient wanted the tumor removed and consequently underwent an operation. The surgical findings showed a 3-cm × 3-cm mass in the lateral wall of the left ventricle. The mass was resected from the left ventricular wall in the shape of a tear drop. The left ventricular cavity was closed with a 4–0 polypropylene mattress suture and continuous suture. Postoperative histopathological findings showed nodular tumor growth consisting of bundles of spindle-shaped cells in the myocardium. The margins were negative. Immunostaining showed c-KIT (CD17) positivity and CD34 positivity, consistent with GIST metastasis. Conclusions This case involved GIST metastasis to the heart muscle, which has rarely been reported worldwide.https://doi.org/10.1186/s40792-022-01433-6Heart tumorMyocardial tumorGISTGastrointestinal stromal tumor
spellingShingle Tadashi Takasaki
Takashi Tsuji
Shogo Nakayama
A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
Surgical Case Reports
Heart tumor
Myocardial tumor
GIST
Gastrointestinal stromal tumor
title A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
title_full A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
title_fullStr A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
title_full_unstemmed A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
title_short A case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
title_sort case of gastrointestinal stromal tumor metastasized to the left ventricular myocardium
topic Heart tumor
Myocardial tumor
GIST
Gastrointestinal stromal tumor
url https://doi.org/10.1186/s40792-022-01433-6
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