Perineural invasion is a frequent histological finding in pancreatic adenocarcinoma. However, perineural invasion by intraductal papillary mucinous neoplasm (IPMN), a precursor lesion of pancreatic adenocarcinoma, has not been reported so far. We report a unique case of perineural invasion by IPMN in a 60-year-old female who underwent pancreatoduodenectomy for high-risk features of IPMN. Histological evaluation showed increased nerve density in the connective tissue of IPMN with multiple foci of perineural invasion by IPMN. In addition, there was a discrete 2 mm focus of invasive carcinoma that did not show perineural invasion. Chemotherapy was started and the patient is disease-free at 29 months follow up. The case illustrates previously unreported neuroplastic alterations and neutrotropism in benign neoplastic component of a malignant IPMN.
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Cancer Med
January 2025
Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
Background: FXYD3 is a Na/K-ATPase modulator which is upregulated in pancreatic ductal adenocarcinoma (PDAC), but its prognostic role is unknown. This study evaluated FXYD3 expression in chemo-naive patients with surgically-resected PDAC at a single centre (1993-2014).
Method: FXYD3 expression was assessed in tumour specimens using immunohistochemistry.
J Cutan Pathol
January 2025
Stritch School of Medicine, Loyola University, Maywood, Illinois, USA.
Metastatic melanoma with unusual histopathology can be diagnostically challenging. One exceptionally rare cutaneous manifestation of metastases is blue-nevus-like metastatic melanoma (BNLMM). A 74-year-old male presented with a blue-gray lesion on his left helix in the same anatomical region of a previously resected lentigo maligna.
View Article and Find Full Text PDFKorean J Clin Oncol
December 2024
Department of Pathology, Safdarjung Hospital, Vardhman Mahavir Medical College, New Delhi, India.
Purpose: Endometrial cancer (EC) ranks as one of the most prevalent gynecological malignancies globally. The presence and role of stromal tumor-infiltrating lymphocytes (TILs) in the tumor microenvironment have garnered interest due to their prognostic and therapeutic potential. This study aimed to evaluate the association between stromal TILs and various clinicopathological parameters in EC.
View Article and Find Full Text PDFHistol Histopathol
December 2024
Laboratory of Epigenetics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
Tumor-infiltrating lymphocyte (TIL) density is both a prognostic and a predictive factor in colorectal cancer (CRC). Whether the heterogeneity of TIL density across the tumor plays an important role in the clinical outcome of CRC is not well known. Adjuvant chemotherapy-treated patients with stage III CRC were analyzed for survival according to TIL density and density heterogeneity, which were determined on CD8-immunostained slides using a machine learning method and by calculating the Simpson evenness index, respectively.
View Article and Find Full Text PDFBraz Oral Res
January 2025
Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Dnepartment of Oral Diagnosis, Piracicaba, SP, Brazil.
The aim of this study was to perform a clinicopathological analysis of oral squamous cell carcinoma (OSCC) in young patients from the northeast of Brazil and compare with elderly individuals. This retrospective study reviewed 104 OSCC cases from 2000 to 2015, focusing on patients under 40 and over 60 at diagnosis. Forty-two patients under 40 years old (40.
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