Primary epithelial-myoepithelial carcinoma (EMC) of the lung is a rare subtype of pulmonary tumors. Originating from bronchial submucosal glands, EMC shares histopathological characteristics with its salivary gland counterparts and typically presents as a low-grade malignancy. Due to its rarity, there is limited literature to guide diagnosis and management. We report the case of a 75-year-old male with a history of smoking and chronic conditions who presented with persistent right-sided back pain. Imaging revealed a para-hilar lesion in the right lung, later confirmed as EMC through bronchoscopy and histopathological analysis. Staging studies excluded local invasion and metastasis, and a multidisciplinary team recommended surgical resection. The patient underwent surgery without complications, and histological analysis of the resected specimen confirmed the diagnosis. At follow-up in the pulmonary oncology clinic, no recurrence or metastasis was observed. This case highlights the importance of a multidisciplinary approach for diagnosing and managing rare pulmonary neoplasms. Bronchoscopy and histopathological analysis played a crucial role in achieving an accurate diagnosis. This case contributes to the limited data on EMC and supports surgical intervention as the primary treatment option for localized disease.
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http://dx.doi.org/10.7759/cureus.80188 | DOI Listing |
Cureus
March 2025
Pulmonology Deparment, Unidade Local de Saúde de Lisboa Ocidental, Lisbon, PRT.
Primary epithelial-myoepithelial carcinoma (EMC) of the lung is a rare subtype of pulmonary tumors. Originating from bronchial submucosal glands, EMC shares histopathological characteristics with its salivary gland counterparts and typically presents as a low-grade malignancy. Due to its rarity, there is limited literature to guide diagnosis and management.
View Article and Find Full Text PDFAm J Surg Pathol
March 2025
Department of Pathology, University Hospital and Faculty of Medicine in Pilsen, Charles University, Czech Republic.
Canalicular tumors of the salivary glands have recently emerged as an entity characterized by distinct morphology and recurrent HMGA2 gene rearrangement. In this study, we analyzed 40 cases intending to elucidate their features further. The monophasic or biphasic tumors exhibited a growth pattern of interconnected anastomosing trabeculae and canaliculi, accompanied by a classical pleomorphic adenoma in one-third of the cases.
View Article and Find Full Text PDFClin Breast Cancer
January 2025
Department of Oncology, Moffitt Cancer Center, Tampa, FL.
Background: Most published data on EMC consists of individual case reports, and survival outcomes are not clearly defined to guide evidence-based management.
Methods: All women with a histologic diagnosis of EMC irrespective of age and stage at diagnosis till 2018 in the National Cancer Database were included (N = 111). Overall survival (OS) was compared among groups using the Kaplan-Meier and log-rank methods.
Virchows Arch
January 2025
Department of Pathology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic.
Pleomorphic adenoma (PA), the most prevalent salivary gland tumor, exhibits a diverse histological spectrum characterized by epithelial, myoepithelial, and mesenchymal patterns, and secretory products. However, a subset of PAs presents microscopic features suggestive of malignancy, leading to challenging and potentially significant diagnostic pitfalls. A comprehensive retrospective analysis was conducted on the Salivary Gland Tumor Registry, compiled by the authors.
View Article and Find Full Text PDFAm J Surg Pathol
January 2025
Department of Oral Pathology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai.
Although sialoblastoma (SBL) is defined as a low-grade malignant salivary gland anlage neoplasm in the 2022 World Health Organization (WHO) Classification of Head and Neck Tumors, its histology, genetics, and behavior remain controversial due to the rarity of the tumor. Here, we performed the first comprehensive clinical, histologic, and molecular analyses of 8 SBLs to better understand their pathogenesis and prognosis. This cohort consisted of 5 boys and 3 girls, with ages ranging from birth to 9 years at diagnosis.
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