{'fraction_non_alphanumeric': 0.0265914585012087, 'fraction_numerical': 0.0056406124093473006, 'mean_word_length': 5.241206030150754, '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}}
Right submandibular mass.

A 20-year-old woman who was in excellent health visited the Division of Oral and Maxillofacial Surgery, Columbia University College of Dental Medicine, New York City, with a concern regarding a large painless swelling in the right submandibular region (Figure 1). The swelling had appeared suddenly five weeks previously. Since then, a slight increase in size had occurred, but the size increase was not related to eating. The clinicians performed extraoral palpation, which revealed in the right submandibular-submental area a soft, painless, nonmobile, fluid-containing mass measuring approximately 7 × 4 centimeters and having illdefined borders. Intraorally, the hard and soft oral tissues were normal in appearance and no inflammation or swelling was evident. The patient was caries free. When the clinicians applied pressure manually in the right submandibular area, a clear and adequate salivary return at the orifice of the right submandibular duct was produced. The clinicians saw no pathological changes on a panoramic radiograph. They did see a large well-circumscribed hypoattenuated area occupying the right submandibular region on a computed tomographic (CT) scan with contrast dye (Figures 2 and 3).