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Cureus Jul 2023Pleomorphic adenomas (PA) are the most common benign salivary gland tumors. They arise from the major salivary glands, as well as the minor salivary glands. They may... (Review)
Review
Pleomorphic adenomas (PA) are the most common benign salivary gland tumors. They arise from the major salivary glands, as well as the minor salivary glands. They may arise rarely from the palate, oral cavity, neck, and nasal cavity also. Yet, the fourth, fifth, and sixth decades of life are the most common for them to manifest. Forty percent of them occur in males and 60% in females. It is a benign mixed tumor, which has three components: an epithelial component, a myoepithelial cell component, and a mesenchymal component. A fibrous capsule separates these cells from the surrounding tissues. It generally presents as a slowly progressing painless swelling, which is well-delineated, nonsymptomatic, and not involving the facial nerve. Salivary gland tumors can be accurately diagnosed before surgery using fine-needle aspiration (FNA), ultrasonography (USG), and computed tomography (CT) scan. Calponin, cluster of differentiation 9 (CD9), glial fibrillary acidic protein (GFAP), Mcl-2, metastasis suppressor gene (NM23), p63, S-100, smooth muscle actin (SMA), and SRY-box transcription factor 10 (SOX10) exhibit the majority of the positive reactions in pleomorphic adenomas. The diagnostic marker pleomorphic adenoma gene 1 (PLAG1) is frequently employed since it is specific for pleomorphic adenoma. Although benign, these epithelial tumors have a propensity to recur and undergo malignant transformation if incompletely excised, leading to increased morbidity in these patients. A review of the consensus guidelines and literature was conducted, and the online literature on the subject from 2002 was included. This article is not a complete review of all the available literature; rather, it is a comprehensive review of the topic.
PubMed: 37614271
DOI: 10.7759/cureus.42311 -
Frontiers in Oncology 2023Expression of the gene is rare in solid tumors but is highly prevalent in salivary gland secretory carcinomas. Here, we report a case of a complete response to...
INTRODUCTION
Expression of the gene is rare in solid tumors but is highly prevalent in salivary gland secretory carcinomas. Here, we report a case of a complete response to entrectinib in a patient with fusion gene-positive parotid carcinoma.
CASE DESCRIPTION
The patient was a 44-year-old man who underwent total left parotidectomy and left cervical lymph node dissection for a left parotid tumor at 24 years of age. The histopathological diagnosis was mammary analog secretory carcinoma. Postoperatively, the patient received only radiation therapy. Sixteen years after the surgery, the patient became aware of a mass in the left parotid region. A close examination revealed local recurrence and multiple cervical lymph node metastases. S-1 monotherapy was started as chemotherapy but was discontinued 3 years later because of disease progression. As there was no standard treatment, a comprehensive genomic profiling test using a next-generation sequencer was performed, and the fusion gene was identified. Entrectinib, an inhibitor, was immediately administered at a dose of 600 mg/day. The local recurrence rapidly shrank grossly from the beginning of treatment, and a complete response was observed 6 months later. However, creatinine levels exhibited an increase at week 68 of treatment; consequently, entrectinib dosage was lowered to 400 mg/day, leading to an immediate improvement in creatinine levels. Entrectinib was associated with additional side effects, including dysgeusia, fatigue, dizziness, and weight gain, all of which were also alleviated by the reduction in entrectinib dose. Thirty months after treatment initiation, the patient maintained a complete response and continued to receive entrectinib.
CONCLUSION
The fusion gene should always be checked in the presence of salivary gland secretory carcinoma.
PubMed: 37601665
DOI: 10.3389/fonc.2023.1247435 -
Biomedical Papers of the Medical... Jun 2024Pleomorphic adenoma (PA), the most common benign tumour of the parotid gland, requires accurate preoperative diagnosis owing to its capacity for malignant...
PURPOSE
Pleomorphic adenoma (PA), the most common benign tumour of the parotid gland, requires accurate preoperative diagnosis owing to its capacity for malignant transformation. The aim of this study was to evaluate our experience with ultrasound-guided fine-needle aspiration biopsy (FNAB) in the diagnostic algorithm for patients with PA and to assess clinical outcomes for those with different surgical approaches.
MATERIAL AND METHODS
We carried out a retrospective analysis of patients treated for parotid gland mass between 2010 and 2016. These had had preoperative FNAB and had undergone subsequent surgery.
RESULTS
165 patients had FNAB with the result of PA and the definitive histology confirmed PA in 159 cases (96.4%). On the other hand, in 179 patients, the definitive histology showed PA and the preoperative FNAB result corresponded in 159 cases (88.9%). The measured sensitivity, specificity and accuracy of ultrasound-guided FNAB in the diagnosis of PA were, respectively, 88.83%, 96.23% and 92.31%. Most of the patients underwent superficial or partial superficial parotidectomy, followed by extracapsular dissection which was associated with statistically lower risk of facial nerve injury (P=0.04).
CONCLUSION
Ultrasound-guided FNAB is simple, accurate and valuable in the diagnosis of PA and provides results that can lead to the choice of less invasive operative treatment.
Topics: Humans; Adenoma, Pleomorphic; Parotid Neoplasms; Male; Female; Retrospective Studies; Middle Aged; Adult; Biopsy, Fine-Needle; Aged; Aged, 80 and over; Sensitivity and Specificity; Young Adult; Adolescent; Parotid Gland; Image-Guided Biopsy; Ultrasonography, Interventional
PubMed: 37431621
DOI: 10.5507/bp.2023.027 -
Journal of Oral and Maxillofacial... Aug 2023During the preoperative evaluation of parotid gland tumors, one of the main concerns is to determine the location of the tumors in relation to the facial nerve. This...
PURPOSE
During the preoperative evaluation of parotid gland tumors, one of the main concerns is to determine the location of the tumors in relation to the facial nerve. This study aims to assess the value of ultrasound for determining the location of parotid gland tumors in relation to the facial nerve using Stensen's duct.
METHODS
This is a retrospective cross-sectional study at a single institute. The subjects who underwent preoperative ultrasound and parotidectomy for parotid gland tumors were included. The subjects with incomplete operative records or no reference standard for the location of parotid gland tumor were excluded. The primary predictor was ultrasound tumor location, which was defined as the location of parotid gland tumors determined by preoperative ultrasound as to whether the tumors were superficial or deep to the facial nerve. The operative records were used as the reference standard for the location of parotid gland tumors. The primary outcome was diagnostic performances of preoperative ultrasound in predicting the location of parotid gland tumors, which were calculated by comparing ultrasound tumor location to the reference standard. Covariates were sex, age, type of surgery, tumor size, and tumor histology. Data analysis involved descriptive and analytic statistics; P < .05 was considered statistically significant.
RESULTS
One hundred and two of 140 eligible subjects met inclusion and exclusion criteria. There were 50 male and 52 female, with a mean age of 53.3 years. Ultrasound tumor location was classified as deep in 29 subjects, superficial in 50, and indeterminate in 23. The reference standard was deep in 32 subjects and superficial in 70. Indeterminate ultrasound tumor location results were grouped as either deep or superficial to make every possible cross table in which ultrasound tumor location results were presented as a dichotomy. The mean sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the ultrasound to predict the deep location of parotid tumors were 87.5, 82.1, 70.2, 93.6, and 83.8%, respectively.
CONCLUSIONS
Stensen's duct on ultrasound can be a useful criterion to determine the location of parotid gland tumor relative to the facial nerve.
Topics: Humans; Male; Female; Middle Aged; Parotid Neoplasms; Parotid Gland; Facial Nerve; Salivary Ducts; Retrospective Studies; Cross-Sectional Studies
PubMed: 37301226
DOI: 10.1016/j.joms.2023.05.012 -
Oral and Maxillofacial Surgery Mar 2024Warthin tumors (WT) are the second most common benign parotid gland neoplasms. They can occur as synchronous or metachronous lesions in 6-10% of cases. This study aims...
PURPOSE
Warthin tumors (WT) are the second most common benign parotid gland neoplasms. They can occur as synchronous or metachronous lesions in 6-10% of cases. This study aims to compare the complication rate in 224 patients who underwent extracapsular dissection (ECD) or superficial parotidectomy (SP) for the treatment of a WT.
METHODS
This retrospective study was conducted at the Department of Maxillo-Facial Surgery at the University of Naples "Federico II" from February 2002 to December 2018 on a group of patients who underwent surgical treatment for WT. The type of surgical technique was chosen based on Quer's classification. The complications evaluated were facial nerve palsy, hematoma, Frey's syndrome, and bleeding.
RESULTS
A total of 224 patients treated from 2002 to 2018 for Warthin tumor were included in the study. Two hundred elven had solitary tumors (94.1%) and 13 had multicentric lesions (5.8%), of which 9 cases presented synchronous lesions and 4 cases presented metachronous lesions. Extracapsular dissection (ECD) was performed in 130 patients (58.3% of cases) and superficial parotidectomy (SP) in the other 94 (41.7% of cases).
CONCLUSIONS
We consider both surgical techniques as valid. In our opinion, it is essential to study each case based on Quer's Classification to obtain the best surgical outcome. Based on a lower observed rate of complications such as facial nerve palsy, Frey's syndrome, and bleeding, ECD seems to be the best option for the surgical treatment of Quer Class I lesions.
Topics: Humans; Retrospective Studies; Follow-Up Studies; Adenolymphoma; Sweating, Gustatory; Postoperative Complications; Parotid Neoplasms; Paralysis; Parotid Gland
PubMed: 37191772
DOI: 10.1007/s10006-023-01156-4 -
Ear, Nose, & Throat Journal Jul 2024Hemangiomas account for only 0.4% to 0.6% of all parotid tumors, making them extremely rare in adults. Unlike pediatric parotid hemangiomas, those in adults typically...
Hemangiomas account for only 0.4% to 0.6% of all parotid tumors, making them extremely rare in adults. Unlike pediatric parotid hemangiomas, those in adults typically present as asymptomatic swellings of the parotid, have no skin discoloration, and usually do not regress spontaneously. Therefore, an accurate diagnosis of parotid hemangiomas in adults before surgical excision is generally challenging. Herein, we present 3 cases of adult parotid hemangiomas. The patients all received parotidectomies with tumor resection. Histopathological analysis of the resected specimens revealed numerous dilated, thin- or thick-walled (small, large, or variably sized) vessels lined with flattened endothelial cells. A diagnosis of cavernous hemangioma of the parotid gland was established only after the histopathological analysis. Parotid cavernous hemangiomas in adults are rare and often misdiagnosed before surgical resection. Clinical presentation and imaging features on ultrasonography, computed tomography, magnetic resonance imaging, and angiography may support an accurate preoperative diagnosis. Surgical resection proved a suitable treatment approach for our 3 cases.
Topics: Humans; Parotid Neoplasms; Female; Male; Hemangioma, Cavernous; Adult; Middle Aged; Parotid Gland; Magnetic Resonance Imaging; Medical Illustration; Hemangioma
PubMed: 34904445
DOI: 10.1177/01455613211067834