Asymptomatic low-grade appendiceal mucinous neoplasm:A case report

BACKGROUND Low-grade appendiceal neoplasms(LAMN)are characterized by low incidence and atypical clinical presentations,often leading to misdiagnosis as acute or chronic appendicitis before surgery.The primary diagnostic tool for LAMN is abdominal computed tomography(CT)imaging.Surgical resection remains the cornerstone of LAMN management,necessitating en bloc tumor excision to minimize the risk of iatrogenic rupture.Laparoscopy,known for its minimal invasiveness,reduced postoperative discomfort,and expedited recovery,is a safe and reliable approach for LAMN treatment.Despite the possibility of pseudomyxoma peritonei development,appendectomy and partial appendectomy generally result in negative tumor margins and favorable outcomes,which can be attributed to the disease’s slow growth and lower malignancy.CASE SUMMARY A 71-year-old male patient was admitted to our hospital with a pelvic spaceoccupying lesion detected 1 mo prior.Physical examination showed a soft abdomen without tenderness or rebound and no palpable masses.No shifting dullness was noted,and digital rectal examination revealed no palpable mass.Enteroscopy revealed a raised,smooth-surfaced mass measuring 3.0 cm in the cecum.Abdominal contrast-enhanced CT showed a markedly thickened and dilated appendix with visible cystic shadows.Laparoscopic surgery was performed and revealed a significantly dilated appendix,leading to laparoscopic resection of the appendix and part of the cecum.Post-surgical pathologic analysis confirmed LAMN.The patient received symptomatic and supportive post-operative care and was discharged on postoperative day 4 without complications such as abdominal bleeding,intestinal obstruction,or incision infection.No tumor recurrence was observed during a 7-mo follow-up period.CONCLUSION LAMN is a rare disease that lacks specific clinical manifestations.Abdominal CT plays a crucial role in diagnosing LAMN,and laparoscopic surgery is a safe and effective diagnostic and therapeutic approach.

Synchronous Mucinous Borderline Tumor of the Ovary and Low-Grade Appendiceal Mucinous Neoplasm

We present a rare case of synchronous mucinous borderline tumor of the ovary and low-grade appendiceal mucinous neoplasm (LAMN). We performed a left adnexectomy to diagnose the left ovarian borderline malignancy and an ileostomy because of the swollen appendix during the operation. It was diagnosed as left ovarian mucinous borderline malignancy and LAMN. LAMN causes peritoneal dissemination, ovarian metastasis, and peritoneal pseudomyxoma. The appendix and ovary are close to each other anatomically and can metastasize if there is a tumor in either. For ovarian mucinous tumors, it is necessary to search the gastrointestinal tract, especially the appendix, as the primary lesion. For appendix tumors, it is necessary to search for the ovary. Since LAMN may be associated with borderline ovarian malignancies, as in this case, there is a possibility of the duplication of tumors when searching for ovarian mucinous tumors as the primary tumor and if ovarian tumors are found. Since LAMN and mucinous ovarian tumors have similar histological features, immunohistochemical staining is useful for their differentiation because they show different immunostaining patterns.

A Case of Low-Grade Appendiceal Mucinous Neoplasm of Its Difficultly to Distinguish from a Right Ovarian Tumor Due to Postmenopause

We here present a rare case of appendiceal tumor mimicking ovarian tumor in menopause woman. The patient was a 56-year-old woman, G1P1, who presented to our hospital with a right adnexal cyst diagnosed at another hospital. Transvaginal echocardiography showed a cyst in the right adnexal region, and pelvic contrast-enhanced MRI revealed a small cyst in the same region. The left ovary was atrophic and identifiable. It was unclear whether the cyst was contiguous with the gastrointestinal tract. Blood tests showed no elevation of tumor markers. We considered its possibility of a gastrointestinal origin, but since right normal ovary was not found, we thought the tumor was of ovarian origin and decided on a laparoscopic resection of the right adnexa. Intraoperatively, we observed atrophied bilateral normal ovaries, and the pelvic tumor was contiguous to the appendix. Surgeons performed a laparoscopic appendectomy after consultation with us. After resection we searched the abdominal and pelvic cavities, but found no obvious disseminated lesions. The histological diagnosis was low-grade appendiceal mucinous neoplasm (LAMN), a rare benign tumor of the appendix. Appendiceal tumors can be difficult to differentiate from right ovarian tumors due to their close anatomic location in the pelvis. It is possible to determine whether the tumor is of ovarian or appendiceal origin by identifying normal ovaries and the location of the feeding vessels into the tumors. In our case, there were no lesions other than the appendix, but LAMN can metastasize to the ovary, cause pseudomyoxoma peritonei, or be an overlapping tumor with an ovarian tumor. If an appendiceal tumor is diagnosed after surgery for ovarian tumor, the intra-abdominal cavity should be searched for metastasis or dissemination, and a thorough search for ovarian lesions should be performed with the possibility of an overlapping tumor in mind.

Giant low-grade appendiceal mucinous neoplasm: A case report

BACKGROUND Appendiceal mucinous neoplasm (AMN) is extremely rare. Since the disease does not manifest a characteristic profile of clinical symptoms, it is easy to misdiagnose and still difficult to diagnose without operation. Here, we report a case of low-grade AMN (LAMN) and summarize its clinical features, diagnosis, and treatment. CASE SUMMARY A 63-year-old postmenopausal woman presented with a history of right lower abdominal mass. The patient underwent laparotomy, which showed an appendiceal mucocele originating from the apex of the appendix, and a simple appendectomy was performed. The subsequent histological assessment identified an LAMN with no lymph node involvement and negative surgical margin. The patient received six cycles of chemotherapy after surgery, and to date, more than a year after the surgery, the patient remains in good health. CONCLUSION A unified, standardized, detailed, and accurate pathological diagnosis is needed for LAMN, to facilitate selection of an appropriate surgical plan. In addition, the surgeon should record the details of the tumors in the surgical records in order to facilitate follow-up after surgery.

Treatment of a giant low-grade appendiceal mucinous neoplasm:A case report

BACKGROUND Low-grade appendiceal mucinous neoplasm(LAMN)is extremely rare and easily misdiagnosed before surgery.CASE SUMMARY We report the treatment of an asymptomatic case of LAMN diagnosed by magnetic resonance imaging(MRI)and surgical findings.A 70-year-old woman presented with an adnexal mass found by physical examination in July 2020.Gynecologic ultrasonography revealed a cystic mass in the right adnexa,and computed tomography showed a cystic mass in the pelvic cavity.All tumor markers were normal.A further MRI examination suggested mucinous neoplasm in the right pelvic cavity,excluding the possibility of adnexal cyst.Laparoscopic exploration found a huge cystic mass of about 10 cm×7 cm that originated from the apex of the appendix,with spontaneous rupture.LAMN was confirmed by pathological examination.As of May 2021,no disease recurrence occurred after an open appendectomy.CONCLUSION This case indicates that we should pay more attention to female patients who are clinically diagnosed with an adnexal mass at admission,.The physical examination should be done carefully,and the laboratory and imaging examination results should be comprehensively analyzed to avoid misdiagnosis and to ensure prompt diagnosis and treatment,and to improve prognosis.MRI may be a better option for the diagnosis of appendiceal mucinous neoplasm.

Single-incision laparoscopic cecectomy for low-grade appendiceal mucinous neoplasm after laparoscopic rectectomy

In this case report,we discuss single-incision laparoscopic cecectomy for low-grade appendiceal neoplasm after laparoscopic anterior resection for rectal cancer.The optimal surgical therapy for low-grade appendiceal neoplasm is controversial;currently,the options include appendectomy,cecectomy,right hemicolectomy,and open or laparoscopic surgery.Due to the risk of pseudomyxoma peritonei,complete resection without rupture is necessary.We have encountered 5 cases of lowgrade appendiceal neoplasm and all 5 patients had no lymph node metastasis.We chose the appendectomy or cecectomy without lymph node dissection if preoperative imaging studies did not suspect malignancy.In the present case,we performed cecectomy without lymph node dissection by single-incision laparoscopic surgery(SILS),which is reported to be a reduced port surgery associated with decreased invasiveness and patient stress compared with conventional laparoscopic surgery.We are confident that SILS is a feasible alternative to traditional surgical procedures for borderline tumors,such as low-grade appendiceal neoplasms.

Evaluation of appendiceal mucinous neoplasms by curved lineararray echoendoscope:A preliminary study

BACKGROUND Preoperative diagnosis of appendiceal mucinous neoplasms is challenging,and there are few reports regarding the endosonographic characteristics of these neoplasms.AIM To provide a retrospective assessment of the imaging features of appendiceal mucinous neoplasms using endoscopic ultrasound(EUS)by curved linear-array echoendoscope.METHODS A database of all patients with appendiceal mucinous neoplasms who had received EUS examination at our hospital between January 2018 and July 2023 was retrospectively analyzed.The EUS characteristics and patients’clinical data were reviewed.RESULTS Twenty-two patients were included in the study.The linear-array echoendoscope successfully reached the ileocecal region in every patient.In the endoscopic view,we could observe the protrusion in the appendiceal orifice in all patients.A volcano sign was observed in two patients,and an atypical volcano sign was seen in two patients.EUS showed that all 22 lesions were submucosal cystic hypoechoic lesions with clear boundaries.No wall nodules were observed,but an onion-peeling sign was observed in 17 cases.CONCLUSION Linear-array echoendoscope is safe to reach the ileocecal region under the guidance of EUS.Image features on endoscopic and echoendosonograhic views could be used to diagnose appendiceal mucinous neoplasms.

Mucinous neoplasm of the appendix:A case report and review of literature

BACKGROUND Appendiceal mucinous neoplasms(AMNs),although not classified as rare,are relatively uncommon tumors most often discovered incidentally during colorectal surgery.Accurate identification of AMNs is difficult due to non-specific sym-ptoms,overlapping tumor markers with other conditions,and the potential for misdiagnosis.This underscores the urgent need for precision in diagnosis to pre-vent severe complications.CASE SUMMARY This case report describes the unexpected discovery and treatment of a low-grade AMN(LAMN)in a 74-year-old man undergoing laparoscopic hemicolectomy for transverse colon adenocarcinoma(AC).Preoperatively,non-specific gastroin-testinal symptoms and elevated tumor markers masked the presence of AMN.The tumor,presumed to be an AMN peritoneal cyst intraoperatively,was con-firmed as LAMN through histopathological examination.The neoplasm exhibited mucin accumulation and a distinct immunohistochemical profile:Positive for Ho-meobox protein CDX-2,Cytokeratin 20,special AT-rich sequence-binding protein 2,and Mucin 2 but negative for cytokeratin 7 and Paired box gene 8.This profile aids in distinguishing appendiceal and ovarian mucinous tumors.Postoperative recovery was uncomplicated,and the patient initiated adjuvant chemotherapy for the colon AC.CONCLUSION This case highlights the diagnostic complexity of AMNs,emphasizing the need for vigilant identification to avert potential complications,such as pseudomyxoma peritonei.

Diagnosis and treatment of biliary mucinous cystic neoplasms: A single-center experience

Background: Biliary mucinous cystic neoplasms(BMCNs) are rare hepatobiliary cystic tumors, which can be divided into noninvasive and invasive types. This study aimed to investigate the diagnosis, treatment, and prognosis of BMCNs in a large single center. Methods: We analyzed 49 patients with BMCNs confirmed by postoperative pathology at the First Afflliated Hospital, Zhejiang University School of Medicine between January 2007 and December 2021. Results: Among the 49 patients, 37 were female(75.5%), and the average age was 57.04 years. Common symptoms included abdominal discomfort, jaundice and fever, while 22 patients(44.9%) had no symptoms. Serum carbohydrate antigen(CA) 19-9 and CA125 concentrations were elevated in 34.8% and 19.6% of patients, respectively. Forty-eight patients had tumors in the intrahepatic bile ducts and only one had a tumor in the extrahepatic bile duct. Forty-eight patients with noninvasive intrahepatic BMCNs were further analyzed in terms of pathological features: 34(70.8%) had low-grade intraepithelial neoplasms(LGINs), and 14(29.2%) had high-grade intraepithelial neoplasms(HGINs). The potential immunohistochemical markers of BMCNs were cytokeratin(CK) 19, CK7, estrogen receptor and progesterone receptor. Follow-up data for 37 patients with intrahepatic BMCNs were obtained. The median overall survival(OS) of BMCNs was not reached. The longest survival time was 137 months.The 5-and 10-year OS rates were 100% and 85.4%, respectively. The 5-and 10-year recurrence-free survival(RFS) rates were 93.9% and 80.2%, respectively. Conclusions: BMCNs are rare cystic neoplasms that commonly occur in middle-aged females. BMCNs can only be diagnosed and classified by postoperative pathology, as there are no specific clinical presentations, serological indicators or imaging modalities for preoperative diagnosis. Complete surgical resection is necessary for BMCNs, and the postoperative prognosis is favorable.

Beyond boundaries:Feasibility of curved linear array echoendoscope in appendiceal neoplasm detection

We recently read with great interest a study by Zhang et al in the World Journal of Gastroenterology.In our practice,we focus specifically on examining appendiceal mucinous neoplasms(AMNs)with endoscopic ultrasound(EUS)using different scopes.AMNs are rare neoplastic lesions characterized by an accumulation of mucin inside a cystic dilatation of the appendix.Clinically,they can present as nonspecific acute appendicitis.AMNs can turn into a life-threatening condition,termed pseudomyxoma peritonei,in which the ruptured appendix causes accumulation of mucin in the abdomen.Therefore,accurate and rapid diagnosis of AMN is essential.EUS is able to confirm and stage AMNs;although,EUS examination was once limited to the rectal and anal regions due to the conven-tional oblique-view scopes.With the emergence of new forward-view linear echoendoscopes and instruments like EUS miniprobes and overtubes,the scope of examination is changing.Herein,we discuss the feasibility of using the curved linear array echoendoscopes to examine cecal and appendiceal orifice lesions.

Mucinous appendiceal neoplasm:A case report

BACKGROUND Primary appendiceal tumors are histologically diverse and have an insidious onset and few specific clinical manifestations.In the majority of cases,these tumors are discovered after appendectomy during pathological exam of the resected tissue.Treatment may include appendectomy(simple or radical)and right hemicolectomy depending on factors such as histological type,tumor size and lymph node/organ involvement.The aim of this case study is to describe a rare case of a giant appendicular mucocele and raise awareness of this condition and its management options and follow-up protocol.CASE SUMMARY We present the case of a 43-year-old patient who presented to our emergency department with mild right lower quadrant pain.After the initial check-up and imaging exams,he underwent surgery,where a giant 20 cm×13 cm appendicular tumor was found and resected.Appendicular mucocele was suspected due to the macroscopic appearance and was later confirmed by the pathological exam.The patient’s postoperative evolution was uneventful,and after discharge,he was included in our follow-up program.CONCLUSION In conclusion,mucinous appendiceal neoplasms embody a rare pathology;they are asymptomatic or have few,unspecific clinical signs and in many cases are discovered after appendectomy.

Low Grade Appendiceal Mucinous Neoplasm Presenting as a Mucocoele of the Appendix

Low grade appendiceal mucinous neoplasm (LAMN) is a rare malignancy with incidence of 0.7% to 1.7% of all appendicectomies [1]. LAMN has the worst complication of mucin seeding into adjacent peritoneum leading to pseudomyxoma peritonei. LAMN lacks standardised treatment approach where only appendicectomy is preferred for resection of non metastatic disease. Case Presentation A 38 yr old female presented with right lower quadrant where CT Abdomen revealed Mucocele of Appendix. Patient underwent Laparoscopic Appendicectomy and Histopathological examination revealed Low grade appendiceal mucinous neoplasm. Patient is on regular follow up and is disease free. Conclusion low grade appendiceal mucinous neoplasm is usually an incidental finding where treatment depends on staging and histology of the tumour.

Advances in the Diagnosis and Treatment of Appendiceal Mucinous Neoplasms

Primary appendiceal neoplasms represent a relatively low percentage of all gastrointestinal cancers. A subset of these neoplasms, those of epithelial origin, are characterised by the production of a considerable amount of mucus, which is referred to as appendiceal mucinous neoplasms (AMN). Appendiceal mucinous neoplasms (AMN) have a low incidence, are easily misdiagnosed, depend on postoperative examination for confirmation of the diagnosis, are prone to form a “diagnosis”, and have a high incidence of the disease. Furthermore, they are prone to form peritoneal pseudomyxoma peritonei (PMP), are controversial in surgical decision-making, are prone to recurring after surgery alone, and are tricky to manage clinically. In this paper, we review the pathological characteristics, diagnosis and treatment of appendiceal mucinous tumours in the light of recent literature reports, with a view to providing certain references for the clinical diagnosis and treatment of this disease. .

阑尾低级别黏液性肿瘤伴子宫脱垂1例并文献复习

报道1例阑尾低级别黏液性肿瘤伴子宫脱垂患者的临床资料,并进行文献复习。

阑尾低级别黏液性肿瘤ICD-10编码探究

目的分析我院阑尾低级别黏液性肿瘤ICD-10编码现状及问题,以期提高交界性肿瘤编码的准确率以及医院按病种分值付费(DIP)的入组率。方法从病案信息系统调取2018-2022年主要诊断编码为阑尾低级别黏液性肿瘤的首次住院病案,获得病案共263份,对疾病编码进行逐一核查。结果263份低级别黏液性肿瘤病案中,形态码编码正确153份,形态码编码正确率为58.17%;无转移的病案共91份,形态码编码正确82份,正确率为90.11%;有转移的病案共172份,形态码编码正确71份,正确率为41.28%。结论阑尾低级别黏液性肿瘤的形态学编码正确率偏低,对DIP的入组造成一定影响。编码人员应加强IDC-10编码和相关医学知识的学习,不断提高编码人员的专业技术水平和综合素质,从而提高病案形态学编码的正确率和DIP的入组率。

低级别阑尾黏液性肿瘤与卵巢黏液性囊腺瘤超声特征的对照研究

目的:探讨低级别阑尾黏液性肿瘤(low-grade appendiceal mucinous neoplasm,LAMN)与卵巢黏液性囊腺瘤(ovarian mucinous cystadenoma,OMC)超声特征的差异,为LAMN与OMC的鉴别诊断提供依据。方法:回顾并分析2010年8月—2023年7月复旦大学附属妇产科医院经术后病理学检查证实的35例低级别LAMN患者病史资料,与同期经术后病理学检查证实的40例OMC患者病史资料进行对比,分析其超声特征、一般资料及肿瘤标志物水平的差异。结果:LAMN超声特征多表现为“腊肠样”、不完全分隔的囊性或囊实性肿块,囊液多表现为“洋葱皮样”及“胶冻样”改变,可伴发腹膜假黏液瘤(pseudomyxoma peritonei,PMP),年龄多>55岁,血清癌胚抗原(carcinoembryonic antigen,CEA)、糖类抗原(carbohydrate antigen,CA)19-9、CA125可升高。OMC超声特征多表现为类圆形、完全分隔的囊性或囊实性肿块,囊液多表现为无回声及细密点状回声,年龄多<50岁,CEA、CA125、CA19-9升高不明显。结论:LAMN与OMC在肿块形状、分隔类型及囊液性状等超声特征方面具有明显差异,这些超声特征有望用于LAMN与OMC的鉴别诊断。

阑尾黏液性肿瘤临床病理及分子病理特征分析

目的探讨阑尾黏液性肿瘤(appendiceal mucinous neoplasms,AMNs)的临床病理及分子病理特征,比较低级别阑尾黏液性肿瘤(low grade appendiceal mucinous neoplasm,LAMN)与高级别阑尾黏液性肿瘤(high grade appendiceal mucinous neoplasm,HAMN)的差异性。方法回顾性分析2015年1月至2021年9月西南医科大学附属医院确诊的32例阑尾黏液性肿瘤(appendiceal mucinous neoplasms,AMNs)患者的临床病理资料,并选择10例样本进行高通量测序分析。结果大部分AMNs患者出现消化道肿瘤标志物阳性。HAMN患者出现远处转移、死亡的比例比LAMN患者高。AMNs突变基因主要为KRAS、GNAS、BRAF。AMNs患者普遍存在MTHFR和NQO1基因多态性。LAMN和HAMN患者的TMB均较低,两者比较差异无统计学意义(P>0.05)。结论AMNs有特殊的临床病理及分子病理改变,但HAMN与LAMN之间没有显著性差异。

Visualizing the landscape of appendiceal tumor research after 2010: A bibliometric study

BACKGROUND Despite the rarity of appendiceal tumors,research in this field has intensified,resulting in a growing number of studies and published papers.Surprisingly,no comprehensive bibliometric analysis has specifically addressed appendiceal tumors.AIM To offer a thorough analysis of the current landscape and future trends in appendiceal tumor research.METHODS In our bibliometric analysis studies,we explored the Web of Science Core Collection database.The bibliographic details of the chosen publications were automatically converted and analyzed using the bibliometric package in the R environment.Additionally,we employed VoSviewer to create cooperation network maps for countries,institutions,and authors,as well as clustering maps for keywords.Furthermore,CiteSpace,another software tool,was utilized to build dual-map overlays of journals and analyze references with citation bursts.RESULTS Our study included 780 English-language articles published after 2010.The number of related publications and citations has increased in the past decade.The United States leads in this area,but there is a need to improve cooperation and communication among countries and institutions.Co-occurrence analysis also revealed close collaboration among different authors.Annals of Surgical Oncology was the most influential journal in this field.Analysis of references with high cocitations and references with citation bursts,consistent with analysis of keywords and hotspots,indicated that current research primarily centers on the classification and management of appendiceal mucinous neoplasms and consequent pseudomyxoma peritonei.Despite the abundance of clinical studies,a greater number of in-depth basic research studies should be conducted.CONCLUSION Current research on appendiceal tumors focuses on classification and management of appendiceal mucinous neoplasms and pseudomyxoma peritonei.Enhanced collaboration and basic research are vital for further advancement.

CK7、CK20、Villin、CDX-2、MUC-2、PAX8在卵巢原发性黏液性肿瘤和继发性腹膜假黏液瘤中的表达及鉴别诊断意义

目的探讨CK7、CK20、Villin、CDX-2、MUC-2、PAX8在卵巢原发性黏液性肿瘤(OPMN)和卵巢继发性腹膜假黏液瘤(OS-PMP)中的表达及鉴别意义。方法收集经组织学和临床资料证实的OPMN 22例,OS-PMP 31例,采用免疫组化EnVision两步法检测CK7、CK20、Villin、CDX-2、MUC-2、PAX8的表达。结果CK7、PAX8在OPMN中的阳性率显著高于OS-PMP(分别为100%vs.9.7%,63.6%vs.0)(P<0.01)。CK20、CDX2、MUC2在OSPMP中的阳性率显著高于OPMN(分别为100%vs.9.1%,100%vs.18.2%,100%vs.9.1%)(P<0.01)。Villin在OS-PMP中的阳性率显著高于OPMN(100%vs.68.2%)(P<0.05)。CK7、CK20、CDX-2、MUC-2在OS-PMP诊断中均具有较高的敏感性(分别为90.3%、100%、100%、100%)及特异性(分别为100%、90.9%、81.8%、90.9%)。而Villin、PAX8敏感度性(100%),但特异性较低(分别为31.8%、54.5%)。结论CK7、CK20、Villin、CDX-2、MUC-2、PAX8推荐用于任何临床或病理特征提示继发性起源的卵巢黏液性肿瘤。CK7、CK20、CDX-2、MUC-2是高度敏感性及特异性的免疫组化鉴别诊断标志物。

阑尾黏液性肿瘤的超声表现及临床特征

目的分析阑尾黏液性肿瘤(AMT)的超声表现及临床特征。方法纳入2018年9月至2020年12月西安市中医医院收治的86例AMT患者,其中阑尾黏液性囊腺瘤(AMCA)22例,阑尾黏液性腺癌(AMAC)24例,低级别黏液性肿瘤(LAMN)40例。以术后病理诊断为金标准,分析超声对不同类型AMT的诊断准确率。比较AMCA、AMAC、LAMN患者的临床特征。结果86例AMT患者中,44例患者的超声诊断结果与病理诊断结果相符合,诊断准确率为51.16%;42例误诊,误诊率为48.84%,其中AMCA患者误诊6例(误诊为阑尾炎3例,系膜囊肿1例,阑尾脓肿2例)、AMAC患者误诊14例(误诊为阑尾炎6例,阑尾脓肿4例,卵巢肿瘤2例,系膜囊肿1例,AMCA 1例)、LAMN患者误诊22例(误诊为阑尾炎10例,阑尾脓肿6例,卵巢肿瘤1例,系膜囊肿3例,AMCA 2例)。超声对AMCA的诊断准确率明显高于AMAC和LAMN,差异具有统计学意义(P<0.05)。AMT患者的临床主诉以右下腹疼痛为主,44.19%的患者累及腹腔脏器,肿瘤标志物以CEA和CA125阳性率最高。AMCA患者累及腹腔脏器的发生率、CEA阳性率均明显低于AMAC、LAMN患者,差异具有统计学意义(P<0.05);不同类型AMT患者的年龄、性别、临床主诉及WBC、PLT、Hb异常率、CA125、AFP、CA242、CA199阳性率比较,差异均无统计学意义(P>0.05)。结论不同类型AMT患者的超声特征具有一定差异,且与AMCA相比,LAMN和AMAC的超声特征更为复杂多样,且CEA阳性率和腹腔远处转移率更高。