Purpose: To evaluate the clinical value of mammary sentinel lymphoscintigraphy in breast cancer. Methods: 91 patients with breast cancer in stage T1-2N0 were injected with 55. 5MBq/0. 5ml 99mTc- human serum albumin on the surface of the lesion subdermally or 92. 5MBq/4ml unfiltered 99mTc-sulfur colloid in four divided doses around the lesion. 63 patients underwent mammary lymphoscintigraphy and sentinel node biopsy using a hand-held r-ray detector probe were performed 2 - 16 hr postinjection in 70 patients during breast surgery . Results: The sentinel lymph node( s) (SLN) could quickly be shown by these two tracers in 81% (51/63) cases . A SLN with low activity could be seen in 13. 7% (7/5.1) cases , in which 85.7%(6/7) were proved to have a metastasis. Lymph drainage to the internal mammary nodes occurred in 38. 5% (5/13) of patients with an inner-lesion and in 26. 3% (10/38) of patients with an outer-lesion . The SLN was successfully identified in 95. 7% (67/70) of the patients and the number of the nodes ranged from 1 -5 with an average 1. 6 per person . The accuracy of the SLN with respect to the positive or negative status of the axillary nodes was 92.53% (62/67) . The sensitivity , specificity, PPV, NPV of the method was 82.75% (24/29), 100% (38/38), 100% (24/24) and 88. 37% (38/43), respectively . Conclusions: Mammary lymphoscintigraphy in breast cancer is helpful for localizing SLN correctly and identifying abnormal lymph drainage.

ObjectiveTo assess the diagnostic value of preoperative lymphoscintigraphy for lateral lymph node metastasis in low rectal cancer. MethodsFrom May 1999 to March 2001, pelvic and lower abdominal lymphoscintigraphy with 99mTc sulfur colloid was performed on 32 patients with proven colorectal cancer one day prior to operation. Among these patients were 27 rectal cancers, 3 sigmoid cancers and 2 colon cancers. Fifteen cases of rectal cancer with the tumor located at or below the peritoneal reflection received extended lymphadenectomy with lateral dissection (D3 lymphadenectomy). The result of lymphoscintigrams was correlated with histologic lateral node examination. Results The image ratio of pararectal nodes, obturator nodes, and internal iliac aorti lymph trains was 69%, 91%, and 100% respectively. In 15 patients receiving D3 lymphadenectomy, 10 had negative lymphoscintigrams whereas 5 had positive image, and the lateral pathology positive rate was 13%(2/15). Analysis of these results revealed the sensitivity (100%), specificity (77%) and accuracy (80%) of this diagnostic method. ConclusionPelvic and lower abdominal lymphoscintigraphy with 99mTc sulfur colloid could demonstrate the lateral lymph node drainage of low rectal cancer, and the correlation with postoperative histologic lateral node examination was high enough to enable surgeons to adopt an individualized surgical approach.

Objective:To investigate the important risk factors for the prognosis of patients with colorectal cancer (CRC) based on SEER database, and to construct a line chart prognostic model of 1-, 3-and 5-year survival rates for CRC patients.Methods:The clinical data of 52814 patients with CRC diagnosed pathologically from 2010 to 2015 in SEER database were collected. Cox proportional hazard model was used for univariate and multivariate survival analysis to determine the prognostic risk factors. Stepwise regression was used to screen the clinical factors that had the greatest impact on prognosis. Calibration curve was used to evaluate the accuracy of line chart prediction model for predicting 1-, 3-and 5-year OS in patients with CRC.Results:Surgical method, age, LNR, AJCC stage, T stage, N stage, M stage, vascular tumor thrombus and nerve invasion were independent risk factors for prognosis. Stepwise regression analysis showed that age, T stage, M stage, LNR and mode of operation were the most associated with the prognosis of CRC. A line chart model was constructed based on these five factors. The consistency index of age/T staging/M staging/LNR/ operation on the training set and verification set was the highest, which were 0.762 and 0.756 respectively. ROC curve analysis showed that in the training set and verification set, the AUC of age/T stage/M stage/LNR/ operation prognosis model was more than 0.7, and the model had high diagnostic value.Conclusion:The CRC prognostic line chart model based on age/T staging/M staging/LNR/ operation has a better predictive effect. The constructed prognosis OS diagram is convenient for clinical oncologists to make a more accurate assessment of the prognosis of patients, and provides a theoretical basis for individual diagnosis and treatment of CRC patients.

Objective To explore the predictive value of T cell activation in peripheral blood of patients with hepatocellular carcinoma(HCC) after anti PD-1 therapy and its ratio to tumor burden on the efficacy of immunotherapy. Methods Serum specimens were obtained before and after treatment from 85 patients with HCC who received anti-PD-1 treatment. Indicators such as cell subpopulations and T cell activation were detected by flow cytometry. Combined with imaging analysis, cutoff value was obtained by X-tile software. Survival analysis was used to evaluate patients' outcomes. Results The maximum fold change of Ki-67+/PD-1+/CD8+ T cells in treatment cycles and the tumor burden determined by imaging were associated with prognoses. The ratio of T cell Ki-67+/PD-1+/CD8+ expression to tumor burden ratio greater than 0.6 at the first cycle of anti-PD-1 immunotherapy was associated with improvements in progression-free survival and overall survival (P < 0.05). Conclusion The ratio of activationa in T cells in peripheral blood after immunotherapy to the tumor burden may be related to the clinical efficacy of anti-PD-1 immunotherapy for HCC.

OBJECTIVETo evaluate the feasibility of lymphoscintigraphy in sentinel lymph node biopsy of breast cancer.

METHODLymphoscintigraphy was performed after peritumoral or subdermal injection of radioactive colloid. Then, sentinel lymph node (SLN) biopsy guided by gamma detector probe was performed. Factors correlated with identification-detection rate were assessed.

RESULTSLymphatic drainage was present in preoperative lymphoscintigraphy in 88(93%) out of 95 patients, with 39 (44.3%) positive for lymphatic drainage other than in the axilla. A total of 91 (95.8%) patients had their SLN identified in the intraoperative procedure. The quality of lymphoscintigraphic image was closely related to SLN identification-detection rate in the intraoperative procedure (P = 0.025).

CONCLUSIONSentinel lymph node outside the axilla can be detected by lymphoscintigraphy. The combination of lymphoscintigraphy and gamma detector probe for sentinel lymph node biopsy of breast cancer not only is acceptable but promising.

Adult ; Aged ; Aged, 80 and over ; Axilla ; Breast Neoplasms ; diagnosis ; pathology ; Female ; Humans ; Lymph Nodes ; Lymphatic Metastasis ; diagnosis ; Middle Aged ; Sentinel Lymph Node Biopsy