Guangzhou University of Chinese Medicine, Guangzhou, China.
Department of Nuclear Medicine, General Hospital of Southern Theater Command, Guangzhou, China.
Medicine (Baltimore). 2023 May 19;102(20):e33802. doi: 10.1097/MD.0000000000033802.
Neoplasms with perivascular epithelioid cell differentiation (PEComas) are mesenchymal tumors that rarely occur in the colon. Here, we report the occurrence of a malignant PEcoma in the colon using 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT).
A 55-year-old woman was admitted to the hospital with abdominal pain for 10 days and a self-induced abdominal mass for 3 days. 18F-FDG PET/CT imaging showed a large hypermetabolic nodule and mass in the right mid-upper abdomen with heterogeneous density and a further increase in metabolism on the delayed scan.
PEComa of the colon.
Tumor resection was performed.
The patient is well after 2 months of treatment, pending further follow-up.
Malignant perivascular epithelioid cell tumors originating in the colon are extremely rare, and our report suggests that PEComa should be considered as a differential diagnosis for 18F-FDG gastrointestinal malignancies. Additionally, 18F-FDG PET/CT may play a key role in the staging and extent of lesions in intestinal malignancies.
具有血管周上皮样细胞分化的肿瘤（PEComas）是一种罕见发生于结肠的间叶性肿瘤。在此，我们报告一例使用 18F-氟脱氧葡萄糖正电子发射断层扫描/计算机断层扫描（18F-FDG PET/CT）诊断的结肠恶性 PEComa。
一名 55 岁女性因腹痛 10 天伴自扪及腹部肿块 3 天入院。18F-FDG PET/CT 成像显示右上中腹部有一个大的高代谢结节和肿块，密度不均，延迟扫描时代谢进一步增加。
结肠的 PEComa。
进行了肿瘤切除术。
患者在治疗后 2 个月恢复良好，尚需进一步随访。
起源于结肠的恶性血管周上皮样细胞肿瘤极为罕见，我们的报告提示，对于 18F-FDG 胃肠道恶性肿瘤，应考虑将 PEComa 作为鉴别诊断。此外，18F-FDG PET/CT 可能在胃肠道恶性肿瘤的分期和病变范围中发挥关键作用。
