Chen J J, Changchien C S, Chiou S S, Tai D I, Lee C M, Kuo C H
Division of Gastroenterology, Chang Gung Memorial Hospital, Taiwan, Republic of China.
J Ultrasound Med. 1992 Oct;11(10):527-31. doi: 10.7863/jum.1992.11.10.527.
To evaluate the sonographic patterns of smooth muscle tumors of the gastrointestinal tract, we analyzed 25 patients with histologically confirmed smooth muscle tumors. Sonography revealed no abdominal mass in seven patients (sonogram-negative), and abdominal masses in 18 patients (sonogram-positive). The mean size of tumors in the sonogram-negative group (4.5 +/- 1.5 cm) was smaller than that in the sonogram-positive group (11.4 +/- 3.5 cm). We classified the various sonograms into three patterns. Comparing the sonograms with the computed tomographic pictures of each pattern, we theorized that the different patterns on sonograms may be caused by tumor necroses of different sizes with or without gas in the necrotic cavity. For the necrotic tumors, the size of the necrotic area did not correspond to the size of the tumor. However, the tumors with necroses were significantly larger than those without necroses. A central necrosis was found in cases exhibiting both leiomyosarcoma and leiomyoma. On comparing the sonogram-positive and sonogram-negative groups, we found that the size and location of a tumor may affect the detection rate of that tumor by sonography.
为评估胃肠道平滑肌肿瘤的超声特征，我们分析了25例经组织学确诊的平滑肌肿瘤患者。超声检查显示，7例患者无腹部肿块（超声检查阴性），18例患者有腹部肿块（超声检查阳性）。超声检查阴性组肿瘤的平均大小（4.5±1.5 cm）小于超声检查阳性组（11.4±3.5 cm）。我们将各种超声图像分为三种类型。通过将每种类型的超声图像与计算机断层扫描图像进行比较，我们推测超声图像上不同的类型可能是由不同大小的肿瘤坏死以及坏死腔内有无气体引起的。对于坏死性肿瘤，坏死区域的大小与肿瘤大小并不对应。然而，有坏死的肿瘤明显大于无坏死的肿瘤。在平滑肌肉瘤和平滑肌瘤病例中均发现有中央坏死。通过比较超声检查阳性组和阴性组，我们发现肿瘤的大小和位置可能会影响超声对该肿瘤的检出率。
