{'fraction_non_alphanumeric': 0.046511627906976744, 'fraction_numerical': 0.006644518272425249, 'mean_word_length': 5.03, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Clinical picture and pathology of dermatofibrosarcoma protuberans].

Dermatofibrosarcoma protuberans (D.p.) is a rare connective skin tumor (0.1%). On the basis of the literature and 13 own cases, we present data concerning age, sex, localisation, as well as clinical and histological findings. We report on pre-operative planning of treatment, surgical therapy (wide excision and closure by rotation flap), and clinical course. The follow-up indicates that D.p. is a neoplasia bearing a low rate of malignancy, which may change into a highly malignant tumor especially after treatment with radiation.