Squamous metaplasia occurring within a colorectal polyp is a rare finding, having a reported incidence of approximately 0.44%. The origin of the squamous cells in this type of setting is uncertain (mechanical irritation and chronic inflammation are potential predisposing factors). It has been implied that the significance of squamous metaplasia in colorectal adenomas is that of a preneoplastic lesion for squamous cell and adenosquamous carcinoma, however the evidence to support this statement is scarce. We present a case of a large tubulovillous adenoma located in the sigmoid, with low-grade dysplasia and multiple foci of p16-positive immunoexpression squamous metaplasia in a 54-year-old Caucasian male, presenting with rectal bleeding.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7728113 | PMC |
| http://dx.doi.org/10.47162/RJME.61.1.26 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Integrating Ultrabright Polymer Dots and Stereo NIR-II Imager for Assessing Anti-Angiogenic Drugs in Oral Cancer Model.
J Cell Mol Med
January 2025
Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan.
The development of efficient platforms for the evaluation of anti-angiogenic agents is critical in advancing cancer therapeutics. In this study, we exploited an ultrabright semiconducting polymer dots (Pdots) integrating with a three-dimensional (3D) near-infrared-II (NIR-II) fluorescence imaging system designed to assess the efficacy of potent anti-angiogenic agents PX-478 and BPR0C261 in an oral squamous cell carcinoma (OSCC) tumour model, which depends on angiogenesis for dissemination. PX-478, a hypoxia-inducible factor-1α (HIF-1α) inhibitor, and BPR0C261, a microtubule-disrupting agent, were administrated into tumour-bearing mice established using murine MTCQ1 tongue cancer cells through intraperitoneal injection and oral gavage, respectively.
View Article and Find Full Text PDFPseudocellulitis in the Setting of Pemetrexed Treatment for Non-Small Cell Lung Cancer.
J Cutan Pathol
January 2025
Division of Dermatology, The University of Texas at Austin, Dell Medical School, Austin, Texas, USA.
Pemetrexed is a chemotherapeutic, antimetabolite agent that has been used in oncology to treat diseases such as metastatic non-small cell lung cancer and unresectable malignant pleural mesothelioma. Pemetrexed use may result in pseudocellulitis, which presents as poorly demarcated patches or plaques with erythema, edema, warmth, and tenderness. These lesions can present unilaterally or bilaterally on the lower extremities.
View Article and Find Full Text PDFCHD1L accelated the progression of cutaneous squamous cell carcinoma via promoting PI3K/PD-L1 signaling pathway induced M2 polarization of TAMs.
Sci Rep
December 2024
Department of Dermatology, Hebei Medical University Third Hospital, 139 Ziqiang Road, Shijiazhuang, 050000, Hebei, China.
To investigate CHD1L's impacts and molecular processes in hypoxic cutaneous squamous cell carcinoma. Monoclonal proliferation assays and CCK-8 were used to detect the proliferation capacity of A431 cells and Colon16 cells; wound healing experiments and Transwell assays were used to examine the migration and invasion capacity of A431 cells and Colon16 cells; angiogenesis experiments were conducted to assess the influence of A431 cells on angiogenesis; a nude mouse tumor xenograft experiment and HE staining were utilized to evaluate the impact of CHD1L on the progression of cutaneous squamous cell carcinoma; western blot analysis was performed to detect the expression of p-PI3K, p-AKT, and PD-L1 in A431 cells, as well as CD9, TSG101, PD-L1 in exosomes, and CD206, Arginase-1, iNOS, IL-1β, p-AKT, p-mTOR, VEGF, COX-2, MMP2, MMP9, p-ERK1/2 in tumor-associated macrophages. Under hypoxic conditions, CHD1L promoted the proliferation, migration, invasion, and angiogenesis of cutaneous squamous cell carcinoma.
View Article and Find Full Text PDF[PHPS1 enhances PD-L1 serine phosphorylation by regulating ROS/SHP-2/AMPK activity to promote apoptosis of oral squamous cell carcinoma cells].
Nan Fang Yi Ke Da Xue Xue Bao
December 2024
Department of Stomatology, Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China.
Objectives: To investigate the mechanism of PHPS1 for promoting apoptosis of oral squamous cell carcinoma cells and the role of AMPK in regulating tumor angiogenesis under hypoxic conditions.
Methods: Human oral squamous cell carcinoma Ca9-22 cells cultured in hypoxic conditions (1% O) were inoculated subcutaneously in 16 nude mice, which were divided into control group and PHPS1 group (8) for treatment with 10% DMSO and 10% PHPS1 respectively. Tumor growth in the mice was monitored till 14 days after the treatment, and the xenografts were examined pathologically using HE staining.
Introduction: Although the widespread use of screening tests and HPV vaccines for squamous cell carcinoma has led to early detection and treatment, effectiveness is limited for cervical adenocarcinoma. Lobular endocervical glandular hyperplasia (LEGH) corresponds to gastric metaplasia, but is regarded as a pathological condition with subtle morphological abnormalities. LEGH is a benign lesion and a precursor to gastric-type adenocarcinoma.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!