scholarly journals Relative CT number of periappendiceal fat stranding may be an applicable index for estimating the severity of acute appendicitis

2021 ◽  
Vol 94 (1120) ◽  
pp. 20200437
Author(s):  
Xinhong Song ◽  
Mingqi Shi ◽  
Wei Liu ◽  
Yansong Ge ◽  
Peiyuan Wang
Keyword(s):  
Acute Appendicitis ◽  
Subcutaneous Fat ◽  
High Accuracy ◽  
Ct Number ◽  
Psoas Major Muscle ◽  
Mesenteric Fat ◽  
Preoperative Ct ◽  
Psoas Major ◽  
Fat Stranding ◽  
Ct Features

Objectives: To investigate the feasibility of relative CT numbers to periappendiceal fat attenuation as an applicable index for estimating the severity of acute appendicitis. Methods: In total, 308 consecutive surgery-confirmed acute appendicitis patients and 243 controls with available preoperative CT were analyzed retrospectively. The radiological parameters were appendix diameter, length, and wall thickness as concurrent appendicitis signs. CT numbers of periappendiceal fat, mesenteric fat, subcutaneous fat in the anterior and posterior abdominal wall, retroperitoneal fat, gluteal subcutaneous fat and psoas major muscle were measured, as well as the relative CT numbers of periappendiceal fat compared with other locations. Results: There were 287 suppurative acute appendicitis (SAA) and 21 gangrenous or perforated acute appendicitis (GPAA) cases confirmed by pathology. The CT number of periappendiceal fat was significantly higher in patients than in controls (P＜0.01) although there was a wide overlap (−72.33 HU–117.43 HU). Significant differences in relative CT numbers were observed between the groups in gluteal subcutaneous fat (RCTgl) and psoas major muscle (RCTps) (P＜0.01). The AUCs of RCTgl and RCTps showed high accuracy to discriminate acute appendicitis from controls (AUC = 0.803, 0.761; 0.854, 0.847) and GPAA from SAA (AUC = 0.905, 0.851). Conclusions: Attenuation of periappendiceal fat on CT is related to the severity of appendicitis, and relative CT numbers (RCTgl and RCTps) could be an applicable index for severity determination. Advances in knowledge: Periappendiceal fat infiltration is related to the severity of acute appendicitis (especially relative CT number). Other clinical and CT features also need to be considered in the evaluation of inflammation.

scholarly journals Computed Tomography Mimics of Acute Appendicitis: Predictors of Appendiceal Disease Confirmed at Pathology

2012 ◽  
Vol 2 ◽  
pp. 73 ◽  
Author(s):  
Jeremy B. Duda ◽  
Miranda L. Lynch ◽  
Shweta Bhatt ◽  
Vikram S. Dogra
Keyword(s):  
Computed Tomography ◽  
Acute Appendicitis ◽  
Odds Ratio ◽  
Regression Models ◽  
Lymphoid Hyperplasia ◽  
Pathologic Finding ◽  
Radiological Findings ◽  
Abdominopelvic Ct ◽  
Mesenteric Fat ◽  
Fat Stranding

Purpose: Imaging and pathology findings are used to analyze the capability of computed tomography (CT) to distinguish between acute appendicitis and radiological mimickers. Materials and Methods: A retrospective review of 5861 patients undergoing abdominopelvic CT from 2000 to 2008 for suspicion of acute appendicitis was performed. Appendix diameter, surrounding inflammation, appendicolith, and location were assessed. Only those cases were included where patients underwent surgery for acute appendicitis on CT findings. Pathology specimens were examined and those indicative of acute appendicitis were identified. Statistical analysis was performed to correlate pathology and CT signs. Results: A total of 969 of the 5681 patients were included in the study. Acute appendicitis was verified in 870/969 (89%) cases, while 99/969 (11%) demonstrated either chronic findings (i.e., fibrosis [32%], granulomatous disease [16%], lymphoid hyperplasia [11%]) or no abnormality. In regression models, appendiceal diameter >7 mm (odds ratio [OR] = 3.98, P < 0.0001) and mesenteric fat stranding (OR = 6.04, P < 0.0001) were associated with acute appendicitis. Nearly 87% (754/870) of acute appendicitis cases showed both signs on CT, compared with 53% (52/99) of those with other pathologic finding (P < 0.0001). In cases with non-appendicitis findings, 39% (39/99) had only one of these signs compared with 13% (112/870) of those with acute appendicitis (P < 0.0001). Conclusion: Diseases of the appendix other than acute appendicitis may manifest with isolated radiological findings and should be considered as part of the differential diagnosis in cases of borderline acute appendicitis.

Cross-sectional area of psoas major muscle and hip flexion strength in youth soccer players

2012 ◽  
Vol 112 (10) ◽  
pp. 3487-3494 ◽  
Author(s):  
Yoshihiro Hoshikawa ◽  
Tomomi Iida ◽  
Nozomi Ii ◽  
Masataka Muramatsu ◽  
Yoshiharu Nakajima ◽  
...  
Keyword(s):  
Cross Sectional Area ◽  
Soccer Players ◽  
Sectional Area ◽  
Cross Sectional ◽  
Youth Soccer ◽  
Psoas Major Muscle ◽  
Psoas Major ◽  
Hip Flexion ◽  
Flexion Strength

scholarly journals Rare heterotopic pregnancy after frozen embryo transfer: a case report and literature review

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Xianping Wang ◽  
Ding Ma ◽  
Yangang Zhang ◽  
Yanhua Chen ◽  
Yuxia Zhang ◽  
...  
Keyword(s):  
Embryo Transfer ◽  
Left Kidney ◽  
Frozen Embryo Transfer ◽  
Heterotopic Pregnancy ◽  
Psoas Major Muscle ◽  
History Of ◽  
Gestational Sac ◽  
Β Hcg ◽  
Ectopic Pregnancies ◽  
Psoas Major

Abstract Background Heterotopic pregnancy occurred after frozen embryo transfer with two D3 embryos, and the case had a history of bilateral salpingectomy due to salpingocyesis. An ectopic heterotopic pregnancy was implanted in the left psoas major muscle, which has not been previously reported. Case presentation A 33-year-old woman presented with left back pain after curettage due to foetal arrest in the uterus without vaginal bleeding and spotting, and painkillers relieved the pain initially. When the painkillers ceased to work, the patient returned to the hospital. The β-human chorionic gonadotropin (β-hCG) level remained increased compared with the time of curettage, and a diagnosis of retroperitoneal abdominal pregnancy was suggested by ultrasonography and computerized tomography (CT) with the gestational sac implanted in the left psoas major muscle at the left hilum level. Laparotomy was performed to remove the ectopic pregnancy. During the operation, we carefully separated the adipose tissue between the space of the left kidney door and left psoas major muscle, peeled away the gestational sac that was approximately 50 mm × 40 mm with a 25-mm-long foetal bud, and gave a local injection of 10 mg of methotrexate in the psoas major muscle. Fifty days later, β-hCG decreased to normal levels. Conclusion It is necessary to pay more attention to the main complaints to exclude rare types of ectopic pregnancies of the pelvis and abdomen after embryo transfer.

scholarly journals Loss of psoas major muscle volume during systemic chemotherapy is related to worse prognosis in testicular cancer

2018 ◽  
Vol 49 (2) ◽  
pp. 183-189 ◽  
Author(s):  
Yosuke Mitsui ◽  
Takuya Sadahira ◽  
Motoo Araki ◽  
Yuki Maruyama ◽  
Koichiro Wada ◽  
...  
Keyword(s):  
Testicular Cancer ◽  
Systemic Chemotherapy ◽  
Muscle Volume ◽  
Psoas Major Muscle ◽  
Psoas Major ◽  
Worse Prognosis

Lumbar Plexus and Psoas Major Muscle: Not Always as Expected

2008 ◽  
Vol 33 (2) ◽  
pp. 109-114 ◽  
Author(s):  
L KIRCHMAIR ◽  
P LIRK ◽  
J COLVIN ◽  
G MITTERSCHIFFTHALER ◽  
B MORIGGL
Keyword(s):  
Lumbar Plexus ◽  
Psoas Major Muscle ◽  
Psoas Major

scholarly journals Effects of dietary organic selenium and vitamin E supplementation on post mortem oxidative deterioration in muscles of pigs

2001 ◽  
Vol 44 (2) ◽  
pp. 193-202 ◽  
Author(s):  
P. Krska ◽  
R. Lahucky ◽  
U. Küchenmeister ◽  
K. Nürnberg ◽  
O. Palanska ◽  
...  
Keyword(s):  
Vitamin E ◽  
Oxidative Stability ◽  
Longissimus Dorsi ◽  
Post Mortem ◽  
Colour Stability ◽  
Organic Selenium ◽  
Positive Effects ◽  
Oxidative Deterioration ◽  
Psoas Major Muscle ◽  
Psoas Major

Abstract. The effect of feeding high levels of α-tocopherol and organic selenium (Se) to pigs on colour stability and on the susceptibility to oxidative deterioration was investigated. Treatments consisted of supplementation of vitamin E (200 mg/kg diet), organic Se (0.3 mg/kg diet) and both vitamin E and organic Se for the last 60 days to finishing pigs before slaughtering. Longissimus dorsi (LD) and psoas major (PM) muscles were examined after 2 and 7 days of storage on colour stability and on lipid peroxidation (measured as malondialdehyde equivalents). Rate of oxidation by Stimulation with Fe2+/ascorbate was also estimated in LD samples obtained post mortem. In PM 7 days post mortem we found differences between control and groups of pigs supplemented with vitamin E and Se on reflectance, but significant differences (P < 0.05) were found only in the vitamin E + Se group. Positive effects (P < 0.05) of vitamin E and Se on colour in psoas major muscle refrigerated for 7 days are supported with significant (P < 0.05) lower levels of TBARS values in pigs supplemented with vitamin E and organic Se as well. Supplementation with organic Se does not affect the oxidative stability of muscle tissue (longissimus dorsi) when the rate of iron-induced lipid oxidation was examined. Dietary Se had limited potential for enhancing the quality of pork carcasses (psoas major) and accentuating the effect of vitamin E on the oxidative stability of longissimus dorsi muscle was not found.

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