Carcinoma, Hepatocellular ; pathology ; Humans ; Hyperplasia ; Liver ; pathology ; Liver Neoplasms ; pathology ; Precancerous Conditions ; pathology

Carcinoma, Hepatocellular ; pathology ; Diagnosis, Differential ; Humans ; Liver Cirrhosis ; pathology ; Liver Neoplasms ; pathology ; Precancerous Conditions ; pathology

The necessity of early detection of prostate cancer renewed interest regarding putative premalignant lesions in the tumorigenesis of the prostate. Prostatic intraepithelial neoplasia (PIN) is one potential precursor for prostatic adenocarcinoma. The term PIN has been adopted to replace a wide range of synonyms in the literature that describe potential precursors. PIN is an intraluminal proliferation of the secretory cells lining architecturally benign prostatic ducts and acini that exhibit cytologic atypia. In this review, we discuss the histologic features, the differential diagnosis, the evidence that PIN is a precursor of prostatic carcinoma, and the clinical significance of PIN.
Adenocarcinoma/*pathology ; DNA, Neoplasm/analysis ; Diagnosis, Differential ; Human ; Male ; Precancerous Conditions/*pathology ; Prostatic Neoplasms/*pathology

Humans ; Lichen Planus, Oral ; pathology ; Mouth Neoplasms ; pathology ; Precancerous Conditions ; pathology

Objective: To establish a rat model for laryngeal precancerous lesions histologically and pathologically comparable to the human counterpart. Methods: Thirty-six Wistar rats were randomly divided into experimental group and control group, with 18 rats in each group, and 1% 4-nitroquinoline-1-oxide (4NQO) solution and saline were respectively applied to the laryngeal mucosas of rats in two groups. During subsequent 20 weeks, the changes of laryngeal mucosas were regularly observed with naked eyes and endoscope and lesions were determined by histology. SPSS 22.0 software was used for statistical analysis. Results: The food intake, water intake and body weight of the rats in the experimental group were lower than those in the control group, with statistically significant differences (all P<0.05). White plaque, superficial ulcer, erosion and miliary particles were present in the larynxes of rats in the experimental group, with histological manifestations of atypical hyperplasia or carcinoma in situ, and normal epitheliums were shown in the control group. The number of Ki67 positive cells in the laryngeal mucosas of rats in the experimental group at the 4 th, 8 th, 12 th, 16 th, and 20 th weeks were 13.5±2.4, 35.6±5.8, 53.4±8.3, 78.8±11.6, 80.6±12.4, respectively, no Ki67 positive cells were found in the control group at individual time points, and the differences were statistically significant (t=9.74, 10.63, 11.14, 11.77, 11.26, respectively, all P<0.01). Conclusion: 4NQO can credibly cause rats laryngeal precancerous lesions, which morphologically and histologically mimic laryngeal carcinnogenesis. This method is practical, easy and reliable to prepare the animal model of laryngeal precancerous lesions.
Animals ; Carcinoma in Situ ; Carcinoma, Squamous Cell/pathology* ; Humans ; Larynx/pathology* ; Precancerous Conditions/pathology* ; Rats ; Rats, Wistar

Endometrial Neoplasms ; drug therapy ; pathology ; Female ; Humans ; Precancerous Conditions ; drug therapy ; pathology ; Progestins ; therapeutic use

China ; epidemiology ; Humans ; Precancerous Conditions ; diagnosis ; epidemiology ; pathology ; Stomach Neoplasms ; diagnosis ; epidemiology ; pathology ; Topography, Medical

Barrett's esophagus is now clearly recognized as a preneoplasic condition. Progression of metaplasia through dysplasia to adenocarcinoma is a widely accepted theory for esophageal carcinogenesis. That high grade dysplasia is frequently found in association with esophageal adenocarcinoma. Long-term endoscopic surveillance of high grade dysplasia in Barrett's esophagus facilitates detection and treatment of esophageal cancers in the early stage.
Barrett Esophagus ; diagnosis ; pathology ; therapy ; Esophageal Neoplasms ; diagnosis ; Esophagoscopy ; Humans ; Hyperplasia ; pathology ; Precancerous Conditions ; diagnosis

BACKGROUND: Family clustering of esophageal cancer (EC) has been found in high-risk areas of China. However, the relationships between cancer family history and esophageal cancer and precancerous lesions (ECPL) have not been comprehensively reported in recent years. This study aimed to provide evidence for identification of high-risk populations. METHODS: This study was conducted in five high-risk areas in China from 2017 to 2019, based on the National Cohort of Esophageal Cancer. The permanent residents aged 40 to 69 years were examined by endoscopy, and pathological examination was performed for suspicious lesions. Information on demographic characteristics, environmental factors, and cancer family history was collected. Unconditional logistic regression was applied to evaluate odds ratios between family history related factors and ECPL. RESULTS: Among 33,008 participants, 6143 (18.61%) reported positive family history of EC. The proportion of positive family history varied significantly among high-risk areas. After adjusting for risk factors, participants with a family history of positive cancer, gastric and esophageal cancer or EC had 1.49-fold (95% confidence interval [CI]: 1.36-1.62), 1.52-fold (95% CI: 1.38-1.67), or 1.66-fold (95% CI: 1.50-1.84) higher risks of ECPL, respectively. Participants with single or multiple first-degree relatives (FDR) of positive EC history had 1.65-fold (95% CI: 1.47-1.84) or 1.93-fold (95% CI: 1.46-2.54) higher risks of ECPL. Participants with FDRs who developed EC before 35, 45, and 50 years of age had 4.05-fold (95% CI: 1.30-12.65), 2.11-fold (95% CI: 1.37-3.25), and 1.91-fold (95% CI: 1.44-2.54) higher risks of ECPL, respectively. CONCLUSIONS: Participants with positive family history of EC had significantly higher risk of ECPL. This risk increased with the number of EC positive FDRs and EC family history of early onset. Distinctive genetic risk factors of the population in high-risk areas of China require further investigation. TRIAL REGISTRATION ChiCTR-EOC-17010553.
Case-Control Studies ; China/epidemiology* ; Esophageal Neoplasms/pathology* ; Humans ; Precancerous Conditions/pathology* ; Risk Factors ; Stomach Neoplasms

Objective:To analyze the risk factors of recurrence and canceration for premalignant vocal fold lesions after surgery, and to provide a reasonable basis for preoperative evaluation and postoperative follow-up. Methods:This study retrospective analyzed the relationship between clinicopathological factors and clinical outcome（recurrence, canceration, recurrence-free survival, and canceration-free survival） in 148 patients undergoing surgical treatment in Chongqing General Hospital from 2014 to 2017. Results:The five-year overall recurrence rate was 14.86% and the overall recurrence rate was 8.78%. Univariate analysis showed that smoking index, laryngopharyngeal reflux and lesion range were significantly associated with recurrence（P<0.05）, and smoking index and lesion range were significantly associated with canceration（P<0.05）. Multivariate logistic regression analysis showed that smoking index ≥600 and laryngopharyngeal reflux were independent risk factors for recurrence（P<0.05）, and smoking index ≥600 and lesion range ≥1/2 vocal cord were independent risk factors for canceration（P<0.05）. The mean carcinogenesis interval for the postoperative smoking cessation group was significantly longer（P<0.05）. Conclusion:Excessive smoking, laryngopharyngeal reflux and a wide range of lesions may be related to postoperative recurrence or malignant progression of precancerous lesions in the vocal cord, and further large-scale multi-center prospective randomized controlled studies are needed to clarify the effects of the above factors on recurrence and malignant changes in the future.
Humans ; Vocal Cords/pathology* ; Retrospective Studies ; Laryngopharyngeal Reflux/complications* ; Prospective Studies ; Precancerous Conditions/pathology* ; Risk Factors