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Abstract：
BACKGROUND: To assess the frequency of appearance of various signs (isolated and grouped) in emergency imaging tests in patients with anisakiasis, according to the location of gastrointestinal tract involvement.
METHODS: Retrospective review by two experienced radiologists of emergency ultrasounds and CTs performed on patients admitted in the Emergency Department of our hospital with later confirmed anisakiasis (2010-2021), assessing the presence of signs suggesting anisakiasis. Calculation of the frequency of appearance according to the gastric or intestinal location, as well as the most common grouped signs.
RESULTS: Out of 231 total patients with anisakiasis, imaging studies were performed in 144: abdominopelvic ultrasound in 43 cases and CT in 111 (both techniques in 31). In cases with gastric occurrence (34), in CT the wall stratification (100%), wall thickening (97%), fat stranding (91%) and ascitic fluid (82%) were predominant. In the intestinal cases (105), in CT (95) the wall thickening (100%), fat stranding (92%) and mesenteric vessel engorgement (83%) were usual; in ultrasound (40), ascitic fluid and wall thickening (70% in both cases) were frequently observed. The frequency of grouped appearance of the mentioned signs was 82% in gastric cases, 80% in intestinal cases and 50% in ultrasounds. Multisegment involvement in CT reached 28% (gastric + intestinal) and 11% (only intestinal) of cases.
CONCLUSIONS: The most frequent CT findings in patients with gastric anisakiasis are wall stratification and thickening, fat stranding and ascitic fluid. In the intestinal cases, wall thickening, fat oedema and vessel engorgement are the most often observed findings.
UNASSIGNED: The presence of different radiological signs makes it advisable to include anisakiasis in the differential diagnosis of acute abdomen. Intestinal and multifocal involvement rates are greater than previously reported.
CONCLUSIONS: • In gastric anisakiasis, CT frequently shows wall stratification and thickening, fat stranding and ascitic fluid. • In intestinal anisakiasis, CT often presents wall thickening, fat stranding and vessel engorgement. • In intestinal anisakiasis, ultrasounds most frequently show ascitic fluid and wall thickening.
METHODS: Retrospective review by two experienced radiologists of emergency ultrasounds and CTs performed on patients admitted in the Emergency Department of our hospital with later confirmed anisakiasis (2010-2021), assessing the presence of signs suggesting anisakiasis. Calculation of the frequency of appearance according to the gastric or intestinal location, as well as the most common grouped signs.
RESULTS: Out of 231 total patients with anisakiasis, imaging studies were performed in 144: abdominopelvic ultrasound in 43 cases and CT in 111 (both techniques in 31). In cases with gastric occurrence (34), in CT the wall stratification (100%), wall thickening (97%), fat stranding (91%) and ascitic fluid (82%) were predominant. In the intestinal cases (105), in CT (95) the wall thickening (100%), fat stranding (92%) and mesenteric vessel engorgement (83%) were usual; in ultrasound (40), ascitic fluid and wall thickening (70% in both cases) were frequently observed. The frequency of grouped appearance of the mentioned signs was 82% in gastric cases, 80% in intestinal cases and 50% in ultrasounds. Multisegment involvement in CT reached 28% (gastric + intestinal) and 11% (only intestinal) of cases.
CONCLUSIONS: The most frequent CT findings in patients with gastric anisakiasis are wall stratification and thickening, fat stranding and ascitic fluid. In the intestinal cases, wall thickening, fat oedema and vessel engorgement are the most often observed findings.
UNASSIGNED: The presence of different radiological signs makes it advisable to include anisakiasis in the differential diagnosis of acute abdomen. Intestinal and multifocal involvement rates are greater than previously reported.
CONCLUSIONS: • In gastric anisakiasis, CT frequently shows wall stratification and thickening, fat stranding and ascitic fluid. • In intestinal anisakiasis, CT often presents wall thickening, fat stranding and vessel engorgement. • In intestinal anisakiasis, ultrasounds most frequently show ascitic fluid and wall thickening.
摘要：
背景：为了评估anisakiasis患者在急诊影像学检查中出现各种体征（孤立和分组）的频率，根据胃肠道受累的位置。
方法：由两名经验丰富的放射科医师对我院急诊科收治的患者进行的急诊超声检查和CT进行回顾性回顾，这些患者后来确诊为anisakiasis（2010-2021），评估是否存在提示茴香病的体征。根据胃或肠位置计算出现的频率，以及最常见的分组标志。
结果：在231名患者中，144例进行了影像学检查：腹盆腔超声检查43例，CT检查111例（两种技术均31例）。在发生胃病的病例中（34），在CT中，壁分层(100%)，壁厚（97%），脂肪绞合（91％）和腹水（82％）占主导地位。在肠道病例中（105），在CT（95）壁增厚（100％），脂肪绞合(92%)和肠系膜血管充血(83%)是常见的；在超声(40)中，经常观察到腹水和壁增厚（两种情况下均为70％）。在胃病例中，上述体征的分组出现频率为82％，肠道病例为80％，超声检查为50％。CT的多段受累病例达到28％（胃+肠）和11％（仅肠）。
结论：胃无囊症患者最常见的CT表现是壁分层和增厚，脂肪绞合和腹水。在肠道病例中，壁厚,脂肪水肿和血管充血是最常见的发现。
■由于存在不同的放射学征象，因此建议将anisakiasis纳入急腹症的鉴别诊断中。肠道和多灶性受累率高于先前报道。
结论：•在胃无尾症中，CT经常显示壁分层和增厚，脂肪绞合和腹水。•在肠anisakiasis，CT常表现为壁增厚，脂肪绞合和血管充血。•在肠anisakiasis，超声最常显示腹水和壁增厚。
方法：由两名经验丰富的放射科医师对我院急诊科收治的患者进行的急诊超声检查和CT进行回顾性回顾，这些患者后来确诊为anisakiasis（2010-2021），评估是否存在提示茴香病的体征。根据胃或肠位置计算出现的频率，以及最常见的分组标志。
结果：在231名患者中，144例进行了影像学检查：腹盆腔超声检查43例，CT检查111例（两种技术均31例）。在发生胃病的病例中（34），在CT中，壁分层(100%)，壁厚（97%），脂肪绞合（91％）和腹水（82％）占主导地位。在肠道病例中（105），在CT（95）壁增厚（100％），脂肪绞合(92%)和肠系膜血管充血(83%)是常见的；在超声(40)中，经常观察到腹水和壁增厚（两种情况下均为70％）。在胃病例中，上述体征的分组出现频率为82％，肠道病例为80％，超声检查为50％。CT的多段受累病例达到28％（胃+肠）和11％（仅肠）。
结论：胃无囊症患者最常见的CT表现是壁分层和增厚，脂肪绞合和腹水。在肠道病例中，壁厚,脂肪水肿和血管充血是最常见的发现。
■由于存在不同的放射学征象，因此建议将anisakiasis纳入急腹症的鉴别诊断中。肠道和多灶性受累率高于先前报道。
结论：•在胃无尾症中，CT经常显示壁分层和增厚，脂肪绞合和腹水。•在肠anisakiasis，CT常表现为壁增厚，脂肪绞合和血管充血。•在肠anisakiasis，超声最常显示腹水和壁增厚。
