AI Article Synopsis

  • Non-islet cell tumor hypoglycemia (NICTH) is a rare condition linked to unusual insulin-like growth factor production, leading to severe low blood sugar levels.
  • Two surgical cases involving large thoracic solitary fibrous tumors (SFT) are discussed, with one patient experiencing severe hypoglycemia four years after tumor removal, and another ten years after detection.
  • Both underwent successful surgery with immediate normalization of glucose and hormone levels, highlighting that even benign tumors like SFT can cause life-threatening hypoglycemia, necessitating ongoing monitoring post-treatment.

Article Abstract

Non-islet cell tumor hypoglycemia (NICTH) is one of the paraneoplastic syndromes manifesting severe hypoglycemia caused by aberrant production of high-molecular-weight insulin-like growth factor 2 (big-IGF2). Two surgical cases of extremely large thoracic solitary fibrous tumors (SFT) with unusual history of NICTH are presented. One case manifested severe hypoglycemia after four years of the first complete surgical resection of the tumor with potential malignant transformation, and the other case showed severe hypoglycemia after ten years of the first detection of the tumor. Meticulous laboratory testing, including serum endocrinological tests and western immunoblotting before and after surgery was performed, and both cases were diagnosed as NICTH. Both patients underwent open thoracic surgery. The patients showed normal glucose and hormone levels immediately after the resection of responsible tumors with elevated blood insulin concentration. SFTs are generally considered benign; however, life-threatening hypoglycemia can happen regardless of treatment. Careful follow-up of the tumor growth is warranted.

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http://dx.doi.org/10.1620/tjem.2024.J012DOI Listing

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