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JPTM > Volume 45(2); 2011 > Article
The Korean Journal of Pathology 2011;45(2): 201-204.
doi: https://doi.org/10.4132/KoreanJPathol.2011.45.2.201
Collision Tumor Composed of a Granulocytic Sarcoma and an Adenocarcinoma of the Stomach: A Case Report.
Kyu Yeoun Won, Juhie Lee, Yong Ho Kim, Youn Wha Kim
1Department of Pathology, Kyung Hee Medical Center, Kyung Hee University College of Medicine, Seoul, Korea. kimyw@khu.ac.kr
2Department of Surgery, Kyung Hee Medical Center, Kyung Hee University College of Medicine, Seoul, Korea.
ABSTRACT
Granulocytic sarcoma, also called chloroma or myeloblastoma, is an extramedullary invasive tumor composed of neoplastic myeloid cells. In this report, we describe a 43-year-old male patient with a collision tumor composed of an adenocarcinoma and a granulocytic sarcoma in the stomach. The coexistence of a granulocytic sarcoma and adenocarcinoma in the stomach has, to the best of our knowledge, not been reported in the literature. The diagnosis of granulocytic sarcoma is very difficult; especially in the absence of concurrent hematologic disease or in the uncommon setting of coexistence with another tumor. Cautious observation is needed when a finding of unusual atypical cells admixed with an adenocarcinoma in the stomach is confronted.
Key Words: Collision; Sarcoma, myeloid; Adenocarcinoma; Stomach