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<p>A 48-mm splenic mass was incidentally discovered in a 78-year-old man upon computed tomography. Follow-up imaging at 12 months revealed enlargement to 60&#xa0;mm, prompting endoscopic ultrasound-guided tissue acquisition with a 22-gauge needle. Histopathological analysis confirmed that it was a sclerosing angiomatoid nodular transformation. The patient was asymptomatic and had no hematologic abnormalities; therefore, splenectomy was not performed. After biopsy, the lesion regressed from 60&#xa0;mm to 46&#xa0;mm, possibly owing to hematoma formation or vascular disruption, and remained stable during 36 months of follow-up. Although splenectomy has been performed in most reported cases of sclerosing angiomatoid nodular transformation because of diagnostic uncertainty, a few recent reports have demonstrated that sclerosing angiomatoid nodular transformation can be diagnosed by endoscopic ultrasound-guided tissue acquisition, thereby avoiding splenectomy. This case highlights the diagnostic utility of endoscopic ultrasound-guided tissue acquisition and supports spleen-preserving management for biopsy-proven sclerosing angiomatoid nodular transformation.</p>

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Avoiding splenectomy in splenic sclerosing angiomatoid nodular transformation through endoscopic ultrasound-guided tissue acquisition: a 36-month follow-up case report

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月27日

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  • Takaki Okuyama,
  • Kazuyuki Matsumoto,
  • Kosaku Morimoto,
  • Shogo Kimura,
  • Takayoshi Miyake,
  • Takuya Satomi,
  • Kensuke Takei,
  • Shogo Inoue,
  • Ryuta Takenaka

摘要

A 48-mm splenic mass was incidentally discovered in a 78-year-old man upon computed tomography. Follow-up imaging at 12 months revealed enlargement to 60 mm, prompting endoscopic ultrasound-guided tissue acquisition with a 22-gauge needle. Histopathological analysis confirmed that it was a sclerosing angiomatoid nodular transformation. The patient was asymptomatic and had no hematologic abnormalities; therefore, splenectomy was not performed. After biopsy, the lesion regressed from 60 mm to 46 mm, possibly owing to hematoma formation or vascular disruption, and remained stable during 36 months of follow-up. Although splenectomy has been performed in most reported cases of sclerosing angiomatoid nodular transformation because of diagnostic uncertainty, a few recent reports have demonstrated that sclerosing angiomatoid nodular transformation can be diagnosed by endoscopic ultrasound-guided tissue acquisition, thereby avoiding splenectomy. This case highlights the diagnostic utility of endoscopic ultrasound-guided tissue acquisition and supports spleen-preserving management for biopsy-proven sclerosing angiomatoid nodular transformation.