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Objective:To investigate the predictive value of mucosal vascular pattern (MVP) in colonic epithelial proliferation of patients with ulcerative colitis (UC) under narrow-band imaging (NBI) colonoscopy.Methods:From December 1, 2012 to January 31, 2015, 42 patients with UC visiting Peking Union Medical College Hospital and receiving NBI colonoscopy were selected. The images of 119 colorectal lesions of all the patients under the conventional white light and NBI endoscopy were collected and at least one biopsy of each lesion was obtained for histological assessment. All the endoscopic images were randomly allocated to one endoscopist (associated chief physician) for the MVP and the Mayo endoscopic score (MES) assessment. The degree of mucosal inflammation was graded from 0 to 4 according to the histological colitis score. The degree and distribution of Ki-67 expression were evaluated by immunohistochemical staining. Student-Newman-Keuls (SNK)- q test and Spearman rank correlation analysis were used for statistical analysis. Results:Under NBI colonoscopy, the MVP of patients with UC was divided into clear type, obscure type and absent type. According to the morphology of mucosal glandular duct, the absent type was divided into crypt opening subtype and villous subtype. There was a positive correlation between MVP under NBI mode and the MES under white light mode ( r=0.80, P<0.001). The Ki-67 staining indexes of MVP obscure type, absent type, crypt opening subtype and villous subtype of absent type were all higher than that of MVP clear type (30.3±12.8, 45.9±12.5, 45.5±12.1 and 46.3±13.1 vs. 15.6±7.3), and the differences were statistically significant (SNK- q test, all P<0.001); and the Ki-67 staining indexes of MVP absent type, crypt opening subtype and villous subtype of MVP absent type were all higher than that of MVP obscure type, and the differences were statistically significant (SNK- q test, all P<0.001). There was a positive correlation between the MVP type under NBI colonoscopy and the distribution of Ki-67 expression ( r=0.49, P<0.001). The Ki-67 staining indexes of inflammation grade 2, 3 and 4 were higher than that of grade 1 (28.8±10.9, 40.2±11.6 and 49.5±10.3 vs. 17.1±8.4), and the difference was statistically significant (SNK- q test, all P<0.001); the Ki-67 staining indexes of inflammation grade 3 and 4 were higher than that of grade 2, and Ki-67 staining index of inflammation grade 4 was higher than that of grade 3, and the differences were statistically significant (SNK- q test, all P<0.001). The distribution of Ki-67 expression was positively correlated with the degree of histological inflammation ( r=0.56, P<0.001). Conclusions:The MVP under NBI colonoscopy may indirectly predict the colonic epithelial proliferation of patients with UC, which may be closely related to the degree of mucosal inflammation.
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Beh?et′s syndrome is a kind of chronic systemic vasculitis with involvement of multiple organs. Intestinal involvement of Beh?et′s syndrome is presently named as intestinal Beh?et′s syndrome. Recently, there is considering another kind of disease type with only typical intestinal ulcers. Since it is difficult to differentiate intestinal Beh?et′s syndrome from Crohn′s disease, intestinal tuberculosis, intestinal lymphoma, and intestinal manifestations of many other autoimmune diseases, and there is limited evidence for the therapy of intestinal Beh?et′s syndrome, proposing diagnosis and treatment recommendations for intestinal Beh?et′s syndrome through evidence-based judgment will be of great significance for clinical practice.
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Objective:To explore the endoscopic features of early gastric cancer (EGC) related to non-curative endoscopic resection, and to construct an assessment model to quantify the risk of non-curative resection.Methods:From August 2006 to October 2019, 378 lesions that underwent endoscopic resection and were diagnosed pathological as EGC in the Department of Gastroenterology, Peking Union Medical College Hospital were included in this case-control study.Seventy-eight (20.6%) non-curative resection lesions were included in the observation group, and 234 lesions which selected from 300 lesions of curative resection were included in the control group according to the difference of operation year ±1 with the observation group, and the ratio of 1∶3 of the observation group to the control group. Univariate and multivariate logistic regression analysis were performed to explore the risk factors for non-curative resection. The independent risk factor with the minimum β coefficient was assigned 1 point, and the remaining factors were scored according to the ratio of their β coefficient to the minimum. A predictive model was established to analyze the 378 lesions.The non-curative resection rates of lesions of different scores were calculated. Results:Univariate analysis showed that the lesion diameter, the location, redness, ulcer or ulcer scar, fold interruption, fold entanglement, and invasion depth observed with endoscopic ultrasonography (EUS) were associated with non-curative resection of EGC lesions ( P<0.05), and contact or spontaneous bleeding may be associated with non-curative resection ( P=0.068). Multivariate logistic regression analysis showed that submucosal involvement (VS confined to the mucosa: β=0.901, P=0.011, OR=2.46, 95% CI: 1.23-4.92), lesion diameter of 3-<5 cm (VS <3 cm: β=0.723, P=0.038, OR=2.06, 95% CI: 1.04-4.09), lesion diameter of ≥5 cm (VS <3 cm: β=2.078, P=0.003, OR=7.99, 95% CI: 2.02-31.66), location in the upper 1/3 of the stomach (VS lower 1/3: β=1.540, P<0.001, OR=4.66, 95% CI: 2.30-9.45), and fold interruption ( β=2.287, P=0.008, OR=1.93, 95% CI: 0.95-3.93) were independent risk factors for non-curative resection of EGC lesions. The factor of lesion diameter of 3-<5 cm and submucosal involvement were assigned 1 point respectively, location in the upper 1/3 of the stomach was assigned 2 points, diameter of ≥5 cm and fold interruption were assigned 3 points respectively, and other factors were assigned 0 point. Then the analysis of 378 lesions showed that the probability of non-curative resection at ≥2 points was 41.9% (37/93), 4 times as much as that at 0 [11.5% (25/217)]. Conclusion:EGC lesions with diameter ≥3 cm, located in the upper 1/3 of the stomach, interrupted folds or submucosal involvement are highly related to non-curative resection. The predictive model based on these factors achieves satisfactory efficacy, but it still needs further validation in larger cohorts.
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Objective:Summarize and analyze the clinical features of immune checkpoint inhibitor (ICI)-related colitis.Methods:From January 2019 to September 2020, the clinical data of 8 patients with ICI-related colitis from Peking Union Medical College Hospital were retrospectively collected and including the onset of ICI-related colitis, clinical symptoms, endoscopic and pathological findings, treatment, comorbidities and resuming of ICI. Independent sample t test was used for statistical analysis. Results:Eight patients were all male, and the median age (range) was 66 years old (55 to 74 years old), 7 cases were diagnosed with stage Ⅳ lung cancer and 1 case was diagnosed with stage Ⅲc pyelo-carcinoma. Among 8 patients, 4 cases of ICI-related colitis occurred during combination of anti-programmed death-1 (PD-1) treatment and chemotherapy, 2 cases occurred during anti-PD-1 monotherapy after combination of anti-PD-1 treatment and chemotherapy, and 2 cases occurred after anti-PD-1 monotherapy. The median time (range) was 44 d (27 to 128 d) from initial anti-PD-1 treatment to the onset of ICI-related colitis and the median time (range) was 8 d (6 to 35 d) from last anti-PD-1 treatment to onset of ICI-related colitis. The ICI efficacy of 4 patients had partial response, 2 patients had stable disease, 1 patient had disease progression, and 1 patient′s condition was not assessed. All 8 patients had moderate to severe extensive colitis. The main clinical manifestation was diarrhea (5/8), 3 patients accompanied by abdominal pain. The endoscopic findings were diffuse mucosal erosion, accompanied by ulcer in 2 patients. The main pathologic findings were cryptitis or crypt abscess, accompanied by apoptosis in 2 patients. Eight patients were all treated with glucocorticoids, among them 2 patients were further treated with biologics, due to the insufficient efficacy of glucocorticoid treatment, 4 patients had opportunistic infections. The initial prednisone dose for patients with opportunistic infections and patients without opportunistic infections was (85.00±52.60) and (60.00±23.09) mg, respectively. The prednisone treatment course was (8.75±4.03) and (7.50±3.11) weeks, respectively, and the differences were not statistically significant (both P>0.05). The colitis relapsed in all 3 patients after resuming of ICI. Conclusions:ICI-related colitis had corresponding ICI treatment history and clinical, endoscopic, and histopathological features. Glucocorticoid is the main treatment, and it is prone to relapse after resuming of ICI.
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Objective:To determine the clinical features and genetic characters of patients with chronic enteropathy associated SLCO2A1 gene (CEAS). Methods:Five CEAS patients diagnosed at Peking Union Medical College Hospital from January 2012 to December 2019 were enrolled in this study. The clinical manifestations, laboratory test, radiological and endoscopic findings, gene detections, treatments and prognosis of these patients were reviewed and analyzed.Results:Five male patients presented gastrointestinal symptoms after puberty, including abdominal pain, diarrhea, intermittent melena or hematochezia, incomplete bowel obstruction, anemia, hypoalbuminemia and hypokalemia. The whole gastrointestinal tract except esophagus could be involved, especially the stomach and ileum. Intestinal lesions were characterized by multiple shallow ulcers with stenosis in the layers of mucosa and submucosa. Five patients were all accompanied with primary hypertrophic osteoarthropathy (PHO), and 1 with myelofibrosis and thoracic duct dysplasia. All patients were homozygous or compound heterozygous mutations of SLCO2A1 gene. Conventional treatment of inflammatory bowel disease and COX-2 inhibitors were ineffective. Conclusions:CEAS is an autosomal recessive genetic disease which widely involves the gastrointestinal tract, and can be associated with skin and bone involvement. There is no effective treatment for CEAS at present. CEAS is a different entity from other inflammatory gastrointestinal diseases.
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BACKGROUND@#Endoscopic biopsy can underestimate gastric malignancies as low-grade intraepithelial neoplasia (LGIN). Definitively diagnosed LGIN would progress. This study aimed to evaluate predictive factors to identify malignancies misdiagnosed as LGIN by biopsy and LGIN at high risk of progression.@*METHODS@#The clinical records of patients diagnosed with gastric LGIN by endoscopic biopsy who underwent at least two endoscopies during the first year of follow-up between 2007 and 2017 were retrospectively collected. Three endoscopists reviewed photographs of the initial endoscopy, described lesion characteristics, and made endoscopic diagnoses. Logistic regression was used to analyze predictors to identify malignancies underestimated as LGIN. A receiver operating characteristic curve was used to evaluate the diagnostic accuracy of these predictors. Patient clinical outcomes of follow-up >1 year were collected. Kaplan-Meier estimates with log-rank tests and Cox proportional hazards regression were used to analyze predictors of progression.@*RESULTS@#Overall, 48 of 182 (26.4%) patients were proven to have malignancies. A single lesion, a large lesion size, and marked intestinal metaplasia (IM) were independent predictors of initially misdiagnosed malignancies. The area under the curve of these predictors was 0.871, with a sensitivity of 68.7% and specificity of 92.5%. Twelve of 98 patients (12.2%) progressed during the 33-month median follow-up period. A whitish appearance, irregular margins, marked IM, and histological diagnosis of LGIN more than twice within the first year were predictors for progression.@*CONCLUSIONS@#Lesions diagnosed as LGIN by biopsy with marked IM and other predictors above should be prudently treated for high potential to be malignancies or progress. Endoscopic follow-up with repeated biopsies within the first year is recommended.
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Humans , Biopsy , Carcinoma in Situ , Endoscopy , Prognosis , Retrospective Studies , Stomach Neoplasms/diagnosisABSTRACT
Objective:To investigate the clinicopathological characteristics and the risk factors of lymph node metastasis(LNM) of undifferentiated early gastric cancers(EGCs) in elderly patients.Methods:The elderly patients(≥65 years old) who underwent radical gastrectomy with lymph node dissection and were diagnosed as having EGCs in Peking Union Medical College Hospital from January 2010 to August 2019 were included. The clinicopathological characteristics of undifferentiated EGCs(namely signet ring cell EGCs and poorly differentiated EGCs) were compared with those of differentiated EGCs, and the risk factors for LNM of undifferentiated EGCs in the elderly patients were analyzed with logistic regression.Results:Data of 165 elderly EGCs patients were reviewed, including 82 undifferentiated EGCs (11 signet ring cell and 71 poorly differentiated) and 83 differentiated EGCs. The overall LNM incidence was 9.1% (15/165) in elderly EGCs patients, 4.8% (4/83) and 13.4% (11/82) in differentiated and undifferentiated EGCs, respectively. Of all undifferentiated EGCs, the LNM incidence in poorly differentiated EGCs was 15.5%(11/71), and none of 11 signet ring cell EGCs had LNM. Depth of tumor invasion( P=0.019), tumor size( P=0.006), combination of ulceration( P=0.006), depressed gross type( P=0.003) were found to be associated with LNM in elderly undifferentiated EGCs patients under univariate analysis. Multivariate analysis revealed that submucosal invasion( OR=11.98, 95% CI: 1.17-122.84, P=0.037) and tumor size >2 cm ( OR=11.95, 95% CI: 1.88-76.07, P=0.009) were independent risk factors for LNM in elderly undifferentiated EGCs patients. All elderly undifferentiated EGCs patients who met the criteria for expanded indications had no LNM. Conclusion:Submucosal invasion and tumor size >2 cm are independent risk factors for LNM in elderly undifferentiated EGCs patients. The elderly EGCs patients who met the criteria for expanded indications are suitable for endoscopic submucosal dissection.
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Objective:To explore the predictive value of mucosal vascular pattern (MVP) for inflammation and angiogenesis in ulcerative colitis (UC) under narrow-band imaging (NBI) colonoscopy.Methods:Forty-two patients with UC were recruited for NBI colonoscopy between 2012 and 2015 at Peking Union Medical College Hospital. For each segment with lesion, the NBI image was saved and at least one biopsy specimen was obtained for histological assessment. MVP of each image was determined by two trained endoscopists with consensus. The degree of inflammation was graded by using a histological colitis score from zero to four. The immunohistochemical staining of endothelin marker CD31 was performed and microvascular density was assessed by vessel count. Semi-quantitative vascular endothelial growth factor (VEGF) expression was evaluated immunohistochemically. The histological variables were assessed by a pathologist who was blinded to the endoscopic findings.Results:MVP in 119 colorectal segments from 42 patients was assessed under NBI colonoscopy. The results showed 34 segments of clear MVP, 58 of obscure MVP and 27 MVP absence. The classification of MVP was correlated with the degree of inflammation ( r=0.824, P <0.001). There was a trend towards a growing level of microvascular density ( P <0.001) and VEGF expression ( P <0.001), with the varying classifications of MVP. A significantly positive relationship ( r=0.961, P <0.001) between microvascular density and VEGF expression was observed. Conclusion:The classification of MVP under NBI colonoscopy may be a useful tool for prediction of the grade of mucosal inflammation and angiogenesis in UC.
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Objective:To analyze clinical characteristics and monitor microbiome changes in patients with anti-PD-1 associated colitis.Methods:Two patients with non-small cell lung cancer who developed colitis after treated with anti-PD-1 antibodies were retrospectively analyzed in Peking Union Medical College Hospital from January 2019 to January 2020. The clinical symptoms, endoscopic and pathological manifestations, as well microbiome changes were analyzed and compared during pre-treatment, post-treatment and relapse.Results:The main clinical manifestations included diarrhea, elevated inflammatory indicators, colonic mucosal diffuse hyperemic edema with erosion by endoscopy. Changes in the structure of crypts were common pathological characteristics. Glucocorticoids were effective agents, which achieved clinical remission and mucosal healing. The microbiome composition of OTUs was different. After glucocorticoid treatment, the alpha diversity Observed species, Shannon, Simpson, Chao1, ACE indexes all decreased. The Firmicutesdecreased with Bacteroidetesincreasing in phylum level; while the Bacteroides increased with Ruminococcaceaedecreasing in genus level. Lactobacilluswas the potentially beneficial genus. Conclusion:Patients developing anti-PD-1 associated colitis have characteristic clinical and pathological manifestations. Glucocorticoids are effective treatment. The fecal microbiome diversity, relative abundance of major phylum and genus have changed after treatment.
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Mucor infection is rarely reported in non-immunocompromised population, especially in isolated gastrointestinal tracts. IgG4-related diseases (IgG4-RD) have been recognized in recent years, but secondary causes of IgG4 elevation should be differentiated. We reported a young man with duodenal mass and ulcer and high serum IgG4 level. Histological biopsy of the mass revealed positive mucor mycelium and infiltration of IgG4 positive plasma cells. Serum IgG4 decreased to normal range after surgical resection and systemic antifungal treatment. This case suggests that isolated mucor mycosis infection can develop in the digestive tract and mimics as IgG4-related disease.
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Objective@#To analyze the clinical and pathological features of Cronkhite-Canada syndrome (CCS), and to investigate the significance of IgG4 positive plasma cell infiltration.@*Methods@#Clinical presentations, endoscopic appearances and morphological features of 18 patients diagnosed with CCS at Peking Union Medical College Hospital during 2000-2016 were included in the study.There were 11 male and 7 female patients. IgG4 and IgG immunohistochemical stains were performed in total of 55 biopsies from the patients (36 polyps, 10 adenoma and 9 surrounding mucosa) and a control group of 58 cases (19 colonic mucosa, 7 colonic hyperplastic polyps, 9 inflammatory bowel disease and 23 adenoma).@*Results@#Average age of CCS was 59 years (range 47-69 years) and the male to female ratio was 11∶7. All patients had at least one ectoderm lesion. Fourteen cases had testicular abnormalities. Digestive tract symptoms were encountered in most cases. Four patients had a history of connective tissue disease. Endoscopically, multiple polyps were found to involve entire gastrointestinal tract except the esophagus. Morphologically, CCS polyps were characterized by prominent mucosal edema, mild to moderate inflammation, glands hyperplasia and cystic dilatation. Ten cases had colonic adenoma and one case had rectal adenocarcinoma. While none of the cases reached the diagnostic criteria of IgG4 disease, the positive rate of IgG4 positive plasma cells in adenoma of CCS was significantly higher than that in polyps and surrounding mucosa of CCS (60.0%∶13.9%∶0, P<0.01). The positive rate of IgG4 positive plasma cells of adenoma and polyp of CCS had an increased tendency compared to that of adenoma and polyp of control group (60.0%∶34.8%; 13.9%∶0).@*Conclusion@#The findings in the study do not support that CCS is a variant of IgG4 disease, although IgG4 positive plasma cells may be involved in the pathogenesis of CCS, which may be explored in future investigations.
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This is a complicated and difficult case. The onset symptom of a 62-year-old male was recurrent intestinal obstruction. Ileocecal and ileocolic operation was done twice. Massive gastrointestinal bleeding occurred due to giant fistula of descending duodenum, which connected to ileocolic anastomosis. After consultation by multidisciplinary team, jejunal-feeding tube was placed to provide enteral nutrition. With general condition improving, duodenal fistula repair and involved bowel resection were performed. Postoperative pathology confirmed Crohn's disease. The patient was treated with thalidomide and recovered well during follow-up.
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Objective@#To compare the clinicopathologic features and prognosis of the subtypes in a consecutive series of gastric cancers (GC) patients basing on the revised Lauren′s classification so as to better understand the biological behavior of GC.@*Methods@#The surgically resected GC from Peking Union Medical College Hospital during 2003-2005 were reviewed for patients′ age, gender, tumor size, location, Borrman classification, depth of invasion, lymph node metastasis, vascular invasion, and tumor growth pattern (Ming classification).@*Results@#One hundred and sixty-six GC cases were enrolled and classified into four groups: intestinal GC (30, 18.1%), diffuse GC (56, 33.7%), solid GC (9, 5.4%), and mixed GC (71, 42.8%). Intestinal GC patients were older[ (63.2±11.3) years], with a male predominance, and were more frequently found in the antrum. Intestinal GC was the most common subtype for early GC, and tend to develop liver metastases. Diffuse GC patients were youngest [(52.2±12.7) years], with no gender difference, and were usually found in the antrum. Microscopically, diffuse GC were more likely infiltrative (51/56, 91.1%), and tended to metastasize by lymphatic pathway. Solid GC were usually large[ (6.4±2.2) cm], with a male predominance, and the most frequent site was the body/fundus. Solid GC were more likely to show expansile growth pattern with greater depth of invasion (8 of 9 cases were T3/4), but lower rate of lymphatic metastasis. Mixed GC also showed a male predominance, usually found in the antrum, and showed an infiltrative growth pattern (49/71, 69.0%). Though there was fewer T3/4 than solid and diffuse GC, mixed GC were more likely to show lymph nodes, vascular metastases and liver metastases (13/71, 18.3%). TNM staging, lymph nodes metastasis, lymphovascular invasion and revised Lauren′s classification were four independent prognostic factors on multivariate analysis(P<0.05). The survival of patients with mixed GC were significantly worse than patients with other histological types.@*Conclusion@#Revised Lauren′s classification for GC has four distinct subgroups and can be used as independent prognostic factors.
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Objective To evaluate the efficacy, safety and risk factors of endoscopic treatment for patients with early gastric cancer. Methods A retrospective study was conducted in a single center and data was collected from 186 early gastric cancers in 168 pathologically confirmed patients who received endoscopic treatment in Peking Union Medical College Hospital from January 2006 to December 2015. The cases were divided into different groups according to indications of endoscopic treatment. The curative resection rate and complication rate were analyzed. Post-resection outcomes were evaluated by long-term surveillance. Results The curative resection rate was 86. 9%( 73/84) in the group with absolute indications, 61. 7%(50/81)in the group with expanded indications, and 33. 3%(7/21) in the group beyond indications (P＜0. 01). Multivariate analysis revealed that the significant independent predictors for curative resection included lower third location of stomach, no ulceration,≤2 cm at diameter, no adhesion, and well-differentiation in histopathology. In the expanded indications group, discordance of differentiation type and deeper invasion mainly resulted in non-curative resection in en bloc lesions. The rate of bleeding and perforation was 4. 8%( 9/186) and 3. 8%( 7/186), respectively. The perforation rate was significantly lower in the lesions located in the lower third of stomach, without adhesion or performed by en bloc resection. During a median follow-up period of 22. 3 months, 154 patients were followed successfully. The incidence of synchronous and metachronous gastric cancers in curative resected lesions was 7. 5%( 8/106) and 0. 9%(1/106), respectively. Conclusion Endoscopic resection is an optimal treatment with high curative resection rate for early gastric cancer patients with absolute indications. Patients with expanded indications should take precise preoperative evaluation to avoid higher risk of non-curative resection endoscopically. Close follow-up is necessary for synchronous and metachronous gastric cancers after endoscopic resection.
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Objective To investigate the clinical and pathological characteristics of chronic active Epstein-Barr virus associated enteritis(CAEAE). Methods The clinical data of 6 CAEAE patients in Peking Union Medical College Hospital were retrospectively analyzed from January 2010 to November 2017, including clinical manifestations, endoscopic, pathological features, medications and clinical outcome. Results The male∶female ratio was 4∶2 and the average age was 34 years old. All patients did not have personal and family history of immunodeficiency. The common symptoms consisted of fever (6/6), abdominal pain (6/6), hematochezia (6/6) and diarrhea (5/6). The most frequently affected sites were colorectum (5/6), followed by small intestine (3/6). Further serologic tests revealed a high load of serum Epstein-Barr virus (EBV) DNA. The main manifestations under endoscopy were multifocal or diffuse irregular ulcers. There was inflammation in the ulcer bases and surrounding areas, where EBV-encoded small RNA (EBER) was positive by in situ hybridization (6/6). The common complications were massive hemorrhage (3/6) and intestinal perforation (2/6). None of treatment agents including glucocorticoid, ganciclovir, foscarnet sodium and cytotoxic drugs was effective. All patients died within 0.5 to 13 months after diagnosis. Conclusions CAEAE in immunocompetent individuals is a rare disorder with poor prognosis. It is difficult to differentiate CAEAE from inflammatory bowel disease due to similar clinical and endoscopic manifestations.
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A 60-year-old man presented with severe watery diarrhea for 2 months complicated with weight loss and acute kidney injury.He did not respond well to antidiarrheal medicines,empirical antibiotics and dietary exclusion of gluten or even complete bowel rest.The final diagnosis of autoimmune enteropathy (AIE) was made based on histopathologic findings of endoscopic biopsy from duodenal mucosa after excluding neoplastic disease,inflammatory bowel disease,and infectious diarrhea,etc.Chronic diarrhea and oliguria alleviated after the administration of corticosteroids.
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Objective To clarify the clinical features of monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL) with minor endoscopic abnormalities. Methods The clinical data of 6 patients with MEITL characterized by minor endoscopic abnormalities in Peking Union Medical College Hospital from 2012 to 2016 were retrospectively analyzed, including clinical manifestations, endoscopic, pathological features, medications and prognosis. Results Five out of 6 patients were male, with an average age of 61.2 years old. The median disease duration was 4.5 months. All patients initially presented with diarrhea without specific findings for serologic testing. CT enterography showed continuous intestinal lesions, including symmetric thickening of the bowel wall, abnormal hyperenhancement of mucosal surface and lymphadenopathy. Endoscopic appearances were only mildly abnormal, including mucosal swelling, atrophy of villus, mosaic sign and shallow ulcers. Histopathologic findings revealed massive small to medium sized T lymphocytes infiltration with positive expression of CD3 and CD8. Chemotherapy and palliative treatment were administrated after diagnosis. Conclusions Clinical presentations of MEITL are non-specific with minor endoscopic abnormalities. Therefore, biopsy is indispensable for patients with a relatively normal endoscopic result.
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Objective To differentiate colorectal sessile serrated adenoma(SSA)and large hyperplastic polyp(HP)with white light endoscopy and narrow band imaging. Methods Retrospective analysis was performed on the clinical data of 953 patients who underwent endoscopic screening for colorectal cancer at digestive endoscopy center of Peking Union Medical College Hospital from January 2015 to December 2015.Endoscopic features were compared with white light endoscopy and narrow band imaging between SSA and large HP in location, size, Paris classification, surface mucus, NICE classification and varicose microvascular vessel(VMV). Results A total of 28(2.9%)SSAs and 25(2.6%)HPs of diameter not less than 0.5 cm were detected in the total of 953 patients.Statistically significant difference was found in right hemi-colon, diameter not less than 1.0 cm and VMV in two groups(P<0.05). The sensitivities of the above three markers for SSA were 89.3%, 67.9% and 46.4% respectively. The specificities were 64.0%,76.0% and 84.0% respectively. Diagnostic accuracies were 77.4%,71.7% and 64.2% respectively. And the sensitivity, specificity and accuracy of three markers combined(at least two markers)were 75.0%, 88.0% and 81.1%, respectively. Conclusion SSA and large HP could be differentiated with a systemic consideration of lesion location, size, and surface of microvessels by using white light endoscopy and image-enhanced technique.
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Objective To investigate the rational program of colorectal cancer(CRC)screening between ages and genders by using single or repeated fecal immunochemical test(FIT)and colonoscopy. Methods Data of 6 193 patients who underwent opportunistic CRC screening at Peking Union Medical College Hospital were retrospectively analyzed.Patients were divided into four groups:(1)direct colonoscopy;(2)one FIT followed by colonoscopy;(3)two FITs followed by colonoscopy;(4)three FITs followed by colonoscopy.Cost-effectiveness of the four screening procedures was compared between different age groups and genders.Results Ninety-seven(1.6%)patients with CRC and 1 038(16.8%)with colorectal adenoma were detected. In patients younger than 40 years old,1-3 positive FIT strategies were superior to direct colonoscopy. In men aged 40 to 60,one or two positive FITs out of three was more cost-effective than direct colonoscopy,so was one positive FIT out of three in women aged 40 to 60. Direct colonoscopy was the most cost-effective strategy in men older than 60,while one positive FIT out of two was the best screening choice in women older than 60. Conclusion Age and gender are two influential factors for cost-effectiveness of CRC screening. Direct colonoscopy is the most cost-effective screening strategy for men older than 60,but one or more positive FIT followed by colonoscopy is preferred in other age and gender groups.
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Objective Placental transmogrification of the lung(PTL) is rare;summarizes the reported cases and add our two cases, to explore the best diagnosis and treatment strategy.Methods Review of the cases reported in the literature, combined with the 2 cases described in this article, summarizes the characteristics of PTL and analyzed the best diagnosis and treatment strategy.Results We reported two cases of placental transmogrification of the lung, both presented in the right lower lobe, imaging performance as a giant bulla with a cystic nodule.VATS lobectomy was performed in both cases, no complication after operation.Combined with literature review of 34 cases of patients to analyze the best diagnosis and treatment strategy.Conclusion Grossly and microscopically, the lesion resembles placental tissue, with formation of placental villus-like papillary structures covered by epithelial cells.The most common imaging manifestation of PTL is a bullous emphysema pattern or with a mixed pattern of thin-walled cystic lesions and nodules.Early diagnosis and surgical operation should be performed as soon as possible, these lesions are best treated by minimally invasive surgery, leaving as much normal lung tissue and avoiding pneumonectomy if possible.Surgical treatment is usually curable and leads to successful improvement of symptoms and quality of life.