Search

Introduction: The etiology of esophageal squamous papilloma (ESP) is largely unknown. Previous studies have shown a variable association with human papillomavirus (HPV) with conflicting data. The aim of this study was to further investigate the possible association of HPV in our ESP series using RNA in-situ hybridization (ISH) and compare study groups from the United States of America and China. Methods: Demographic and clinical data of patients with ESP were retrieved from the University of California Los Angeles (UCLA) (1/2016-3/2019) and Peking Union Medical College Hospital (PUMCH) (9/2014-3/2019) pathology databases. Hematoxylin and eosin slides were reexamined. Confirmed cases were examined by high- and low-risk HPV RNA ISH. Results: For the UCLA cohort, 13 429 upper endoscopies were performed and 78 biopsies from 72 patients were identified as ESP (F:M = 45:27, 66.7% > 45 years). Seventy-four (94.9%) biopsies were designated as polyps or nodules and 46.6% were located in the mid-esophagus. Other abnormal findings included gastroesophageal reflux disease (48.6%), hiatal hernia (38.9%), and esophagitis (36.1%). For the PUMCH cohort, 63 754 upper endoscopies were performed and 73 biopsies from 71 patients were identified as ESP (F:M = 48:23, 71.8% > 45 years). Sixty-four (87.7%) biopsies were designated as polyps or nodules and 57.5% were located in the mid-esophagus. Other abnormal findings included esophagitis (19.7%), and hiatal hernia (8.5%). No features of conventional cytologic dysplasia or viral cytopathic change were found. None of the cases was associated with squamous cell carcinoma, and none showed positive HPV RNA ISH results. Conclusions: No association was found between ESP and active HPV infection in our 2 cohorts. Other etiopathogenetic mechanisms, such as aging, might contribute to the development of these innocent lesions.

Objective To discuss the clinical features, differential diagnosis and complication treatment of a patient with genetic visceral myopathy. Methods Medical history, physical examination and laboratory results of the patient were collected in detail. The pathology of previous surgery was reviewed. The patient's peripheral blood DNA was extracted and submitted for whole-exome sequencing. Subsequent Sanger sequencing was used to complete the pedigree verification of the mutation site. Results The patient was a young female presented with repeated incomplete intestinal obstruction since early childhood. She used to be misdiagnosed as Hirschsprung's disease for a long period and underwent multiple gastrointestinal segment resections. Her intestinal obstruction symptoms were temporarily relieved by surgeries, but severe diarrhea, mucus and bloody stools and malnutrition gradually occurred after the last operation. The patient had bacterial overgrowth in small intestinal tract and followed by intestinal opportunistic infections secondary to chronic intestinal pseudo-obstruction. The symptoms improved after anti-infection and enteral element diet treatment. Further pathological consultation and whole-exome gene sequencing confirmed the diagnosis of visceral myopathy related to ATCG2 R148L mutation. Conclusions Patients with early onset of chronic intestinal pseudo-obstruction and have poor response to conventional treatment are recommended to perform genetic test. The patients with hereditary visceral myopathy are susceptible to opportunistic intestinal infection. Attentions should also be paid to the prevention and treatment of complications to avoid unnecessary surgery.

Low-grade endometrial stromal sarcoma (LG-ESS) is a rare uterine malignancy, accounting for less than 1% of all uterine malignancies. And there is no literature reporting about acute obstruction of inferior vena cava (IVC) caused by LG-ESS. In November 2021, A patient diagnosed with LG-ESS was admitted to our hospital, presenting with pitting edema of the right lower limb, menstrual disturbance, nausea, oliguria andincreased serum creatinine. Imaging suggested complete obstruction of IVC cava. This difficult case was successfully treated with staging surgery combined with endocrine therapy by a cooperative multidisciplinary team (MDT). The important role of MDT in the treatment process of such a difficult and serious case was demonstrated.

Scene-level change detection (SLCD), as opposed to pixel-level or object-level detection, offers semantic-level change information, which is vital for monitoring land use changes. The existing SLCD methods often rely on post-classification strategies that require separate classifiers for each temporal image, leading to a more complex process and decreased accuracy when classification errors occur. To address these issues, this study redefines SLCD as similarity-assisted category acquisition and introduces SACDNet (similarity-assisted change detection network), a novel network that integrates semantic information from single-temporal scenes with similarity information between bi-temporal scenes to enhance feature embedding learning. The effectiveness of SACDNet was evaluated on two public datasets, yielding impressive results. On the MtS-WH dataset, OA and F1 scores for binary change detection were 0.9701 and 0.9807, while for semantic change detection, both OA and F1 were 0.9042. A similar superior performance was also observed on the LUSCD dataset. Our experimental findings demonstrate that SACDNet significantly outperforms existing advanced SLCD methodologies, indicating its potential for improved change detection accuracy in various applications. [ABSTRACT FROM AUTHOR]