Expression of toll-like receptors in recurrent pleomorphic adenoma and carcinoma ex pleomorphic adenoma.

Pleomorphic adenoma (PA) is a benign salivary gland tumour that may recur or undergo malignant transformation (CXPA). Toll-like receptors (TLR) mediate immune responses triggered by various agents such as viruses and are related to tumour formation either by stimulating or suppressing their growth, with variation across different tumour entities. We compared TLR immunohistochemical expression in PA, its recurrent counterparts and CXPA and evaluated the effect of virus presence in these tumours.

Understanding and overcoming the pitfalls in the diagnosis of pleomorphic and carcinoma ex-pleomorphic adenoma of salivary glands.

The study illustrates a recurrent pitfall in the diagnosis of pleomorphic adenoma and carcinoma ex pleomorphic adenoma.

TRPS1 Immunohistochemistry in Salivary Gland Neoplasms: Analysis on Cytology Cell Blocks and Surgical Follow-Up Correlation.

Introduction: In this study we aim to analyze the TRPS1 immunostaining of salivary gland tumors (SGT) on cytology cell blocks and compare the staining pattern on subsequent surgical resections.

Methods: Malignant SGTs, oncocytomas and basal cell adenomas diagnosed on fine needle aspiration were retrieved from 2019 to 2021 database. Cases with surgical follow-up were selected.

Gargantuan carcinoma ex-pleomorphic adenoma of the submandibular gland: Case report and review of literature.

Introduction: Pleomorphic adenoma is the most common neoplasm of the major salivary glands, and can undergo malignant transformation to carcinoma ex-pleomorphic adenoma (CXPA) in untreated patients.

Case Presentation: Our case describes a 56-year-old male with a 15-year history of slowly growing expansive right-sided neck. He underwent excision of the neck mass, neck dissection, and pectoralis flap reconstruction.

Recurrent pleomorphic adenoma: Epidemiology and surgical challenges; a single tertiary center experience.

Introduction: Despite being less common in recent years, recurrent pleomorphic adenoma still poses a surgical challenge, especially after improper surgery.

Methods: We retrospectively recruited all patients with recurrent pleomorphic adenoma and Carcinoma ex pleomorphic adenoma from February 2007 to April 2024 who were operated upon in a tertiary cancer center. Epidemiological, radiological, and pathological data, risk factors, details of surgical treatment, and surgical/oncological outcomes were analyzed.

Development and Evaluation of a Convolutional Neural Network for Microscopic Diagnosis Between Pleomorphic Adenoma and Carcinoma Ex-Pleomorphic Adenoma.

Aims: To develop a model capable of distinguishing carcinoma ex-pleomorphic adenoma from pleomorphic adenoma using a convolutional neural network architecture.

Methods And Results: A cohort of 83 Brazilian patients, divided into carcinoma ex-pleomorphic adenoma (n = 42) and pleomorphic adenoma (n = 41), was used for training a convolutional neural network. The whole-slide images were annotated and fragmented into 743 869 (carcinoma ex-pleomorphic adenomas) and 211 714 (pleomorphic adenomas) patches, measuring 224 × 224 pixels.

Comprehensive Next Generation Sequencing Reveals that Purported Primary Squamous Cell Carcinomas of the Parotid Gland are Genetically Heterogeneous.

Squamous cell carcinoma (SCC) is one of the most common malignancies involving the parotid gland, but it has been recognized that the vast majority of parotid SCC represents metastases, especially from the ipsilateral facial skin. Bona fide primary SCC of the parotid is so rare that it is unclear whether it truly exists at all. We sought to molecularly characterize cases diagnosed as primary parotid gland SCC to see if they possess a unique genetic makeup.

The Clinical Utilisation and Duration of Treatment with HER2-Directed Therapies in HER2-Positive Recurrent or Metastatic Salivary Gland Cancers.

Salivary gland cancers (SGC) are rare tumours with limited availability of systemic therapies. Some SGC subtypes overexpress HER2, and this represents a potential therapeutic target, but the evidence base is limited. This study sought to analyse real-world data on the efficacy of HER2-directed therapies in SGC.

Clinical and Morphological Aspects of Aggressive Salivary Gland Mixed Tumors: A Narrative Review.

Salivary gland tumors are a rare and heterogeneous group of neoplasms of the head and neck region. The mixed category of these tumors include the following entities: pleomorphic adenoma (PA), carcinoma ex pleomorphic adenoma (CEPA), salivary carcinosarcoma (CS), and metastasizing PA (MPA). The most common benign tumor of the salivary glands is PA.

Pleomorphic adenoma and carcinoma ex-pleomorphic adenoma tumorigenesis: A proteomic analysis.

Objectives: To conduct a comprehensive proteomic analysis of normal salivary gland tissue, pleomorphic adenoma (PA), and carcinoma ex-pleomorphic adenoma (CXPA), and validate the proteomic findings using immunohistochemistry.

Methods: Six normal salivary gland tissues, seven PA and seven CXPA samples underwent laser microdissection followed by liquid chromatography coupled to mass spectrometry. Protein identification and quantification were performed using MaxQuant software.

Novel Detection of Pleomorphic Adenomas via Analysis of Ga-DOTATOC PET/CT Imaging.

Introduction: Currently, the diagnosis of salivary gland tumors using imaging techniques is unreliable.

Methods: In this monocentric retrospective study, we examined patients who received a Ga-DOTATOC PET/CT and subsequently underwent a salivary gland tumor resection between 1 January 2010 and 31 December 2021. PET/CT image assessment was compared with somatostatin receptor (SSTR) expression and histology.

Assessment of hepatitis c core antigen in epithelial salivary gland neoplasms (ex-vivo study).

Background: Salivary gland neoplasms (SGNs) pose a challenge to both pathologists and clinicians. Despite research, the etiology of these neoplasms remains unclear. This study aimed to identify any potential association between the presence of hepatitis C virus (HCV) at the protein or gene level and epithelial salivary gland neoplasms.

Carcinoma ex-pleomorphic adenoma of parotid gland presenting as a gigantic cervicofacial mass.

When neglected for a long time, salivary gland pleomorphic adenoma (PA) can attain a considerable size, increasing the patient's morbidity along with the risk of malignant transformation. Very few case reports are available describing PA of the parotid glands presenting as a large cervicofacial mass. We report a case of epithelial myoepithelial carcinoma -a rare subtype of carcinoma ex-PA (Ca-Ex-PA) of non-luminal differentiation, that developed over a long period in a primary PA of the parotid gland and presented as a giant cervicofacial mass.