The other tumor that occurs in the abdominal wall is the desmoid tumor, which arises from the fascia or aponeurosis of muscles. They often occur at site of previous laparotomy scars. They occur more commonly in female patients than in male patients (Figure 16 ).
发生于腹壁的另一肿瘤是纤维瘤，其起源于筋膜或肌肉的腱膜，常发生于以前剖腹手术的疤痕处，女性病人较男性病人更常见（图16）。
Figure 16. A, Desmoid tumor in a previous scar. B, Color Doppler scan of a Desmoid tumor in a previous scar revealing some vascularity in the lesion.
图16，A，以前疤痕处的硬纤维瘤。B，彩色多普勒扫描以前瘢痕处的硬纤维瘤病变处显示一些血管供应。
The most frequent malignant nodules are metastatic melanomas. Metastases from lymphoma and lung, breast, ovary, and colon cancer are less common (Figure 17 ).
最常见的恶性结节是转移性黑素瘤，来自淋巴瘤和肺、乳腺、卵巢和结肠癌的转移不常见（图17）。
Figure 17. Metastatic nodular deposits in a patient with ovarian cancer.
图17， 一卵巢癌病人转移性结节聚集。
Inguinal Masses 腹股沟肿物
Apart from hernias, other lesions may present as small, palpable masses in the inguinal area.
在腹股沟区，除了疝，其他病变可表现为小的、可触及的肿物。
...Undescended Testis 睾丸未降（隐睾）
Testicular descent can get arrested at any point from the renal hilum to the external inguinal ring. Of all the undescended testes, 90% to 95% are low and in the inguinal canal. Sonography is very useful in detection of undescended testes. The undescended testis is usually small. It is ovoid and reveals a homogeneous, hypoechoic structure. The presence of an echogenic hilum distinguishes a lymph node from a testis (Figure 18 ).
双睾丸下降过程中可于肾门至腹股沟外环的任一点受到阻止，所有的隐睾中，90％－95％的位置较低，位于腹股沟管内。对隐睾的检查，超声是非常有用的，未降的睾丸通常较小，为卵圆形，表现为均质低回声结构。存在门样回声是淋巴结与睾丸的区别之处（图18）。
Figure 18. Undescended testis.
图18， 隐睾。
...Lipoma of the Spermatic Cord and Inguinal Canal 精索和腹股沟管脂肪瘤
Lipoma is the most common tumor in the inguinal canal and spermatic cord. It appears as a spindle-shaped, echogenic mass along the inguinal canal or in the upper part of the scrotum. Lipoma of the cord is a poorly recognized entity that can be present with groin symptoms and clinical findings indistinguishable from those of an inguinal hernia (Figure 19 ).
脂肪瘤是腹股沟管和精索最常见的肿瘤，表现为腹股沟管或阴囊上部梭形肿块回声，而精索脂肪瘤不易辨认，表现为腹股沟的症状，临床表现不能与腹股沟疝相区别（图19）。
Figure 19. Lipoma of the inguinal canal.
图19 ，腹股沟管脂肪瘤。
