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Mucoepidermoid carcinoma

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https://www.readbyqxmd.com/read/28711734/immunohistochemical-investigations-on-the-expression-of-programmed-cell-death-ligand-1-human-leukocyte-antigens-g-and-e-and-granzyme-b-in-intraoral-mucoepidermoid-carcinoma
#1
Carla Mosconi, Diego Antônio Costa Arantes, Andréia Souza Gonçalves, Rita de Cássia Gonçalves Alencar, José Carlos Oliveira, Tarcília Aparecida Silva, Elismauro Francisco Mendonça, Aline Carvalho Batista
OBJECTIVE: To identify the expression of nonclassical human leukocyte antigen G and E (HLA-G and -E), programmed cell death ligand-1 (PD-L1) and granzyme B (GB) in intraoral mucoepidermoid carcinomas (MECs), and to assess whether such expressions are related to metastasis, survival, staging, tumor grade and number of GB-positive cells. DESIGN: For this cross-sectional study, samples of MEC (n=30) were selected and classified as low-grade (LG), intermediate-grade (IG) or high-grade (HG), according to the WHO grading system...
July 8, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28697196/fluorine-18-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-findings-in-a-pediatric-mucoepidermoid-carcinoma-and-differential-diagnosis
#2
Jianhao Xie, Chao Ma, Jun Tang
An 11 years old boy was referred to our hospital. He complained for the last three months for intermittent cough and shortness of breath after exercise which worsened recently. Airways computed tomography (CT) showed an abnormal endobronchial tumor, obstructing the right main bronchus and also atelectasis in the upper lobe of the right lung. Bronchoscopy showed a wet on its surface mass obstructing the right main bronchus. Biopsy showed a mucoepidermoid carcinoma (MEC). The fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) scan showed in the same area a mass with slightly increased (18)F-FDG uptake (maximum standardized uptake value, SUVmax: 3...
July 12, 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28680219/perineural-spread-of-mucoepidermoid-carcinoma-of-parotid-gland-involving-v-vi-and-vii-cranial-nerves-demonstrated-on-positron-emission-tomography-computed-tomography
#3
Piyush Chandra, Satish Nath
Perineural spread (PNS) in head and neck malignancies has been associated with extremely poor prognosis. Through this interesting case, we demonstrate the PNS of a mucoepidermoid carcinoma of parotid gland with simultaneous involvement of V, VI, and VII cranial nerves identified on positron emission tomography/computed tomography.
July 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28670072/primary-mucoepidermoid-carcinoma-of-the-lung-with-prominent-clear-cells
#4
David D Fink, Angela M Lomas, Anja C Roden, Prashant C Shah, Riyam T Zreik
Mucoepidermoid carcinoma of the lung is a rare malignancy of salivary gland-type origin. We report a case of a 21-year-old man with a right mainstem bronchus mass composed predominantly of clear cells. This case represents a rare primary pulmonary low-grade mucoepidermoid carcinoma positive for MAML2 rearrangement by fluorescence in situ hybridization with a prominent clear cell component.
July 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28658793/mucoepidermoid-carcinoma-of-salivary-gland-limitations-and-pitfalls-on-fna
#5
Geetha Vasudevan, Arijit Bishnu, Brij Mohan Kumar Singh, Varun Kumar Singh
Mucoepidermoid Carcinoma (MEC) is the most common malignant neoplasm of salivary gland origin. However, its morphologic heterogeneity poses difficulty in interpretation. In the present series we discuss the morphologic features of MEC, limitations and pitfalls in its diagnosis on Fine Needle Aspiration Cytology (FNAC). Fourteen cases of suspected MEC were evaluated cytologically followed by histopathological examination for confirmation. A definite cytological diagnosis was rendered in nine cases; three of the remaining five were underdiagnosed as abscess, pleomorphic adenoma and mucus cyst...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658776/acinic-cell-carcinoma-papillary-cystic-variant-diagnostic-pitfalls-in-fine-needle-aspiration-cytology
#6
Uma Kumar
Acinic cell carcinoma is a rare tumour comprising 1%-3% of all salivary gland neoplasms. Acinic Cell Carcinoma Papillary Cystic Variant (ACC-PCV) is a distinct subtype and shows variegated appearance on cytology. It is important to differentiate it from other malignant lesions because of its poor prognosis. We describe a case of 20-year-old female with swelling on left cheek for the last four months. Fine needle aspiration was done and diagnosed as intermediate grade mucoepidermoid carcinoma on cytology. Histological study of the resected tumour showed features of ACC-PCV...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28655435/primary-epithelial-salivary-gland-tumours-in-children-and-adolescents
#7
M Gontarz, G Wyszyńska-Pawelec, J Zapała
Primary epithelial tumours of the salivary glands are very rare in paediatric patients. The aim of this study was to evaluate the clinical course, treatment, and outcomes of these uncommon neoplasms based on the authors' experience and the recent literature. The medical charts of 12 female patients and seven male patients with primary epithelial salivary gland tumours were reviewed. All were under 19 years of age and underwent surgical treatment between 1994 and 2016. The results of this group of paediatric patients were compared with those of 621 adult patients...
June 24, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28652780/overexpression-of-pd-l2-is-associated-with-shorter-relapse-free-survival-in-patients-with-malignant-salivary-gland-tumors
#8
Hyeyoon Chang, Jung Sun Kim, Yoon Ji Choi, Jae-Gu Cho, Jeong-Soo Woo, Aeree Kim, Jun Suk Kim, Eun Joo Kang
OBJECTIVES: PD-1/PD-L1 and CTLA-4 have been investigated and are thought to play an important role in tumor evasion. This study aimed to investigate expression patterns of immune-related molecules, and their clinical impacts in malignant salivary gland tumors. PATIENTS AND METHODS: We performed immunohistochemical staining for PD-L1, PD-L2, CTLA-4, PD-1, and CD8(+) tumor-infiltrating lymphocytes in 70 malignant salivary gland tumors. Protein expression was assessed by H-score by multiplying the staining intensity by the percentage of cells with positive staining...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28649694/immunohistochemical-expression-profiles-of-mucin-antigens-in-salivary-gland-mucoepidermoid-carcinoma-muc4-and-muc6-negative-expression-predicts-a-shortened-survival-in-the-early-postoperative-phase
#9
Kie Honjo, Tsubasa Hiraki, Michiyo Higashi, Hirotsugu Noguchi, Mitsuharu Nomoto, Takuya Yoshimura, Surinder K Batra, Suguru Yonezawa, Ichiro Semba, Norifumi Nakamura, Akihide Tanimoto, Sohsuke Yamada
In mucoepidermoid carcinoma (MEC), the most common salivary gland carcinoma, there is a lack of novel prognostic markers, but post-operative early recurrence strongly affects the clinical course and a poor outcome. It is critical to predict which MEC patients are prone to develop recurrence/metastases. Mucins play pivotal roles in influencing cancer biology, thus affecting cell differentiation, adhesion, carcinoma invasion, aggressiveness and/or metastatic potential. Our aim is to elucidate the significance of expression profiles for mucins, particularly MUC4 and MUC6, and their correlations with various clinicopathological features and recurrence in salivary gland MECs...
June 26, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28646544/pure-intraductal-carcinoma-of-the-parotid-gland-cytologic-findings-on-fna-sample-report-of-one-case
#10
Jessica Barizzi, Elisabetta Merlo, Rene Schönegg, Raffaele Pelloni, Luca Mazzuchelli, Franco Fulciniti
One case of intraductal carcinoma of the parotid gland in a 67-year-old male patient is here introduced. The patient, who had a one-year history of a parotid mass, had undergone ultrasound and MRI examination that disclosed a 13x4x3 mm well delimited nodular mass of the accessory lobe of his left parotid gland. Ultrasound-guided Fine Needle Aspiration (FNA) had been performed by the clinician. The obtained smears showed widespread cellular necrosis in which cellular clusters with moderate and focally severe atypias displayed papillary and cribriform architecture and were admixed with sheets of epithelial cells with less striking nuclear atypias, squamous, or apocrine metaplasia...
June 23, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28640349/use-of-gc-ms-to-identify-chemical-constituents-and-cytotoxic-activity-of-the-leaves-of-phoradendron-mucronatum-and-phoradendron-microphyllum-viscaceae
#11
Isla V G A Bastos, Tatiane B DE Oliveira, Maria D Rodrigues, Gardênia C G Militão, Teresinha G DA Silva, Izabel C C Turatti, Norberto P Lopes, Sebastião J DE Melo
Phoradendron mucronatum and P. microphyllum are plants that found in tropical and subtropical areas, used in traditional medicine and popularly known as mistle-thrush. The aim of this study was to identify the chemical constituents of different leaf extracts from P. mucronatum and P. microphyllum and assess cytotoxic activity against strains from a human tumour cells. Extracts obtained with hexane, dichloromethane, chloroform and ethyl acetate from the leaves were analysed by gas chromatography coupled with mass spectrometry (GC-MS) and the cytotoxicity was assessed by the MTT method (bromide (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide))...
April 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28637362/spindle-cell-mucoepidermoid-carcinoma-of-the-palatine-tonsil-with-crtc1-maml2-fusion-transcript-report-of-a-rare-case-in-a-17-year-old-boy-and-a-review-of-the-literature
#12
Giap Hean Goh, Chwee Ming Lim, Tomas Vanacek, Michal Michal, Fredrik Petersson
Mucoepidermoid carcinoma (MEC) with a predominant spindle cell composition occurring in the palatine tonsil is exceedingly rare. We present a case of a 17-year-old boy with an uncommon spindle cell variant of MEC arising in the palatine tonsil. Histologically, the tumor showed a solid, noncystic architecture and was composed of a predominant population of bland spindle to fusiform cells arranged in organoid nests with interspersed goblet cells and focal areas of ductular structures. Reverse transcriptase polymerase chain reaction and fluorescence in situ hybridization (FISH) revealed the presence of a t(11;19) CRTC1-MAML2 gene fusion in this rare variant of MEC...
June 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28628803/mucoepidermoid-carcinoma-associated-expression-of-muc5ac-muc5b-and-mucin-type-carbohydrate-antigen-sialyl-tn-in-the-parotid-gland
#13
Johannes H Matse, Wiresh K Bharos, Enno C I Veerman, Elisabeth Bloemena, Jan G M Bolscher
OBJECTIVES: The aberrant expression of mucins and mucin-type carbohydrates has been described in many types of cancer, including mucoepidermoid carcinoma (MEC), a malignant salivary gland tumor. In this study, we examined the aberrant expression patterns of mucins (MUC1, MUC4, MUC5AC and MUC5B), simple mucin-type carbohydrate antigens (Tn, sialyl-Tn and T) and mature carbohydrate antigens (Lewis(a) and sulfo-Lewis(a) antigens) in MEC originating from the parotid gland, which normally does not secrete mucins...
June 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28610612/deeper-wedge-resection-and-parenchymal-sparing-bronchoplasty-of-the-secondary-carina-an-alternative-surgical-technique-for-removal-of-tumor-located-at-the-orifice-of-upper-lobar-bronchus
#14
An Wang, Xiaofeng Chen, Dayu Huang, Shaohua Wang
BACKGROUND: Sleeve resection and reconstruction of the bronchial corner between the upper lobar bronchus and the intermediate bronchus is technique demanding. CASE PRESENTATION: A 33-year-old Chinese man suffered from recurrence of low-grade malignant mucoepidermoid carcinoma located at the orifice of upper lobar bronchus with invasion to the main bronchus nearly 1 year after he had undergone an incomplete bronchoscopic resection. With detailed preoperative and intraoperative evaluation by computed tomography and bronchoscopy, a deeper wedge resection and bronchoplasty of the secondary carina was performed...
June 13, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28597093/-pediatric-salivary-gland-tumors-and-tumor-like-lesions
#15
REVIEW
A Agaimy, H Iro, J Zenk
Salivary gland tumors and tumor-like lesions in the pediatric population are uncommon. They comprise a heterogeneous group of infectious/inflammatory and neoplastic conditions. Pediatric salivary neoplasms include benign tumors of mesenchymal or epithelial origin as well as malignancies of epithelial (carcinomas), mesenchymal (sarcoma) or hematolymphoid (lymphoma) derivation. Infectious/inflammatory conditions and hematolymphoid malignancies may represent either genuine parenchymal pathology or conditions involving intraglandular lymph nodes of the parotid glands (intraglandular lymphadenopathy and intraglandular nodal lymphomas)...
July 2017: Der Pathologe
https://www.readbyqxmd.com/read/28580068/mucoepidermoid-carcinoma-of-the-airways-in-a-young-adult-male
#16
Maarten Horst, Mirthe Dekker, Sicco Braak
Mucoepidermoid carcinoma (MEC) of the airways is a rare entity most often found in young patients. We present a case of a 23 year old patient with symptoms of pneumonia, which progresses to a pulmonary abscess within a week. Diagnostic work-up reveals an endobronchial obstruction by a pedunculated low grade MEC. A literature review is provided and radiological appearances are described.
February 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/28569562/low-grade-bronchial-mucoepidermoid-carcinoma-during-pregnancy-successfully-treated-by-lobectomy
#17
Mina Mhallem Gziri, Louise Brunée, Christophe Cayphas, Thierry Prigogine, Dirk Van Raemdonck, Frederic Amant, Corinne Hubinont
No abstract text is available yet for this article.
June 1, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28543805/mucoepidermoid-carcinoma-of-the-transverse-colon-a-rare-tumor-entity-with-literature-review
#18
Fei Han, Hong Jiang, Suxia Zhang
Mucoepidermoid carcinoma of the gastrointestinal tract is a rare entity. Here, we report a case of mucoepidermoid carcinoma of the transverse colon in a 77-year-old woman who presented with a 2-month history of epigastrium pain, diarrhea and melena. A giant tumor with apparently invading gallbladder was found by enhanced CT scan, then the extended resection of transverse colon was performed for the patient 2 weeks later. Microscopically, the tumor was composed of solid nests of epidermoid and Periodic Acid-Schiff (PAS)-positive mucin-producing cells with desmoplastic stroma...
May 24, 2017: Pathology International
https://www.readbyqxmd.com/read/28516348/sclerosing-mucoepidermoid-carcinoma-of-the-submandibular-gland-presenting-as-chronic-sialadenitis-a-case-report-and-review-of-literature
#19
L Heptinstall, C Carroll, J Siddiqi, D Kamel, M Petkar
Sclerosing mucoepidermoid carcinoma of the salivary gland (SMEC) is a rare subtype of mucoepidermoid carcinoma (MEC), first described in 1987 by Chan and Saw. As far as we are aware, only 30 cases have been published since then. Most cases were located in the parotid gland with some cases described in the submandibular and minor salivary glands. SMEC typically presents as a long-standing mass, with a non-specific enhancing appearance on imaging and is often non-diagnostic on fine needle aspiration, making pre-operative diagnosis very difficult...
May 17, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28508687/multilocular-thymic-cyst-with-mucinous-differentiation-a-mimicker-of-thymic-mucoepidermoid-carcinoma
#20
Carlos N Prieto-Granada, Todd Stevens
No abstract text is available yet for this article.
May 1, 2017: International Journal of Surgical Pathology
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