{'fraction_non_alphanumeric': 0.030456852791878174, 'fraction_numerical': 0.02707275803722504, 'mean_word_length': 5.231578947368421, '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}}
Sonographic “gastric corona sign”: Diagnosis of gastric pneumatosis caused by a penetrating gastric ulcer

We present a case of gastric pneumatosis associated with splenoportal venous gas caused by a giant penetrating gastric ulcer. On sonography, the gastric pneumatosis appeared as a circular hyperechoic band with distal reverberations due to gas collection in the gastric wall; we termed this appearance the “gastric corona sign.” Awareness of this sonographic sign may aid in the early diagnosis of gastric pneumatosis. © 1999 John Wiley & Sons, Inc. J Clin Ultrasound 27:409–412, 1999.