This week's artwork was donated by Jaclyn, a pediatric cancer patient who received treatment at The Children's Hospital of Philadelphia . Tumors of the rectum and anal canal. Angiogenesis, proliferation, and apoptosis in anal high-grade squamous intraepithelial lesions. Report of three cases. Regarding Robinson et al.
Anal fistulas are frequent events which often recur after an inadequate surgical treatment.
Nevertheless their evolution into malignant diseases is infrequently observed. As reported, abdomino-perineal resection combined with radiotherapy can be the choice treatment. The difficulty is to obtain a reliable differential diagnosis. Intraluminal growth of both LMs and LMSs was more frequently seen than extraluminal or intramural patterns, and tumors were more likely to be found in the rectum than in the anus. As with smooth muscle tumors in other areas of the alimentary tract, symptoms likely persisted for less than 1 year prior to diagnosis.