• Title/Summary/Keyword: Salivary gland

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Epithelial-Myoepithelial carcinoma of parotid glands: 3 cases misdiagnosed as pleomorphic adenoma (다형성 선종으로 오인된 이하선 상피-근상피암종 3례)

  • Lee, Jong Won;Choi, Jong Joong;Kim, Myeong Hee;Kim, Yeon Soo
    • Korean Journal of Head & Neck Oncology
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    • v.33 no.2
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    • pp.43-47
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    • 2017
  • Epithelial-myoepithelial carcinoma (EMC) is a rare type of low-grade malignant tumor that account for approximately 0.5% to 1% of salivary gland neoplasm and arises most commonly in the parotid gland (80%). We introduce three cases of parotid EMC arose as painless cystic mass in male patients over 70 years old. All patients were diagnosed as benign tumors (pleomorphic adenoma) by image and pathologic study (fine needle aspiration) before surgery, but the final histopathologic results were EMC. All three patients underwent parotidectomy without adjuvant radiotherapy. There were no complications such as facial paralysis. No complications or recurrences were observed during follow-up for 6 to 9 months. Since the reports of EMC are still relatively few, we report our three cases with the clinical and pathological review.

Transoral Drainage of Plunging Ranula using Intraoperative Ultrasonography after Sublingual Gland Resection: A Case Report (설하선 절제술 후 수술 중 초음파를 이용한 몰입성 하마종의 경구강 배액술)

  • Seo Bin Kim;Yeong Joon Kim;So Yeon Lee;Hyoung Shin Lee
    • Korean Journal of Head & Neck Oncology
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    • v.39 no.1
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    • pp.49-52
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    • 2023
  • Sublingual resection is known as the most effective treatment of choice to prevent recurrence in patients with plunging ranula. In this case report, we present our experience with a 37 year-old man with prolonged upper neck mass diagnosed as plunging ranula. He had persisting mass lesion even after 4 times of sclerotherapy. Due to fibrotic change the pseudocyst could not be drained after removing the sublingual gland. To resolve the mass lesion, ultrasonography guided transoral drainage was performed. Intraoperative ultrasonography may be useful for transoral drainage of plunging ranula difficult to approach after sublingual resection.

Trastuzumab in a Patient with Metastatic Salivary Duct Carcinoma : A Case Report (트라스투주맙 치료에 반응을 보인 HER2/neu 양성 전이성 타액관 암종 1예)

  • Kong, Bong Han;Lee, Jieun;Choi, Sang-Su;Park, Jinhee;Kim, Yeon Shil;Kim, Min-Sik;Lee, Youn-Soo;Lee, Ji-Yeon;Hong, Sook Hee;Kang, Jin Hyoung
    • Korean Journal of Head & Neck Oncology
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    • v.30 no.2
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    • pp.90-94
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    • 2014
  • Salivary duct carcinoma(SDC) is rare malignancy, accounting for approximately 1-3% of all malignant salivary gland tumors. Systemic chemotherapy has been used for stage IV SDC, but there is no consensus on the standard treatment. SDC is histologically similar to ductal carcinoma of breast and often overexpress HER2/neu, hence HER2/neu targeted therapy could be one of treatment options. A 75-year-old Arabian man was diagnosed as SDC of right parotid gland with extensive metastases. He received oral 5-FU as palliative chemotherapy, but he was intolerable to oral chemotherapy due to severe oral mucositis. Considering immunohistochemical stain of tumor tissue showing strong positive for HER2/neu, we decided to administer an anti-HER2/neu antibody, trastuzumab. Follow-up CT scans before the third dose of trastuzumab demonstrated remarkable regression of multiple metastases as well as primary tumor. This case suggests that HER2/neu targeted therapy may be a potential therapeutic option for the SDC patient with overexpression of HER2/neu.

A Giant Sialolith in a Wharton's Duct: Report of Two Cases (악하선관에 발생한 거대 타석증의 치험 2례)

  • Na, Hye-Jung;Yoon, Kyu-Ho;Cheong, Jeong-Kwon;Bae, Jung-Ho;Kim, Hae-Lin;Jo, Kyu-Hong;Shin, Jae-Myung;Baik, Jee-Seon
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.32 no.4
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    • pp.363-367
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    • 2010
  • Sialolithiasis is the most commom disease of salivary gland. The main symptoms are pain and swelling of the involved gland during eating. It can occur at any age but patients in their third to fifth decade present most cases. Males are more frequently affected than females. Most sialoliths are located within the duct system of the submandibular gland. Submandibular sialoliths close to the hilum of the gland tend to become large and ovoid shape, whereas sialoliths in the duct tend to be elongated. Commonly, sialoliths measure from 1 mm to less than 10 mm, and larger than 15 mm are considered rare. In one case we have removed a giant sialolith which was located in a wharton's duct and in the other case we have removed multiple sialolith including a giant sialolith which were also located in a Wharton's duct. We report these 2 cases with literature reviews.

Ultrastructure of the Submandibular Gland in the Korean Spider Shrew, Sorex caecutiens (뒤쥐, Sorex caecutiens 악하선의 미세구조)

  • Jeong, Soon-Jeong;Yoo, Ji-Yun;Jeong, Moon-Jin
    • Applied Microscopy
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    • v.37 no.2
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    • pp.103-109
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    • 2007
  • The ultrastructure of submandibular gland was examined in the Korean spider shrew, Sorex caecutiens. The submandibular gland wat composed of acini and salivary ducts. A submadibular acinus was a mixed gland having serous demilune cells and mucous cells that were filled with well developed rER, mitochondria and large amount of dense secretory granules. Serous acinar granules were oval shape without distinct limiting membrane on the border and it had only coarse specks with various density. Mucous acinar granules were oval shape without distinct limiting membrane and had a variety pattern with several thin or transparent bands into the homogeneous dense matrix. Thus submandibular acinar granules of S. caecutiens belonging to subfamily Soricinae were distinct from the other mammalian species including Crocidurinae, because of the absence of limiting membrane of acinar granules and specific pattern of mucous acinar granules. Granular duct cells had large amount of small granular vesicles and several characteristic structures of granule which were revered with stratified limiting membranes and filled with coarse serous-like granule or homogeneous matrix.

Epithelial-Myoepithelial Carcinoma of the Parotid Gland: A Case Report (귀밑샘의 상피세포-근상피세포 암종 치험례)

  • Pae, Woo-Sik;Roh, Si-Gyun;Lee, Nae-Ho;Yang, Kyung-Moo;Kang, Myoung-Jae
    • Archives of Plastic Surgery
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    • v.38 no.4
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    • pp.501-504
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    • 2011
  • Purpose: Epithelial-myoepithelial carcinoma (EMC) represents about the 1% of the malignant neoplasms in the salivary glands and clinically most commonly found localized, well defined and sometimes presents orofacial pain. Treatment of choice is surgical excision. Postoperative radiotherapy can be used when surgical margins are doubtful. We report our experience of EMC of the parotid gland. Methods: A 78-year-old man presented with a three-year history of a localized, painless, $7{\times}6cm$ sized recurred tumor in his right preauricular area. He was diagnosed as EMC of the right parotid gland. So a total parotidectomy was performed. In his old medical history, he had a mass in the same area 5 years ago. The diagnosis of pleomorphic adenoma was made and the mass excision was performed at the local clinic without further evaluation. Results: It was unable to visually discriminate between the tumor and the normal tissue. So a total parotidectomy was performed. The patient was got post-operative radiotherapy and was followed up for 9 months. There was no specific evidence of recurrence. Conclusion: We present a case of EMC of the parotid gland in right preauricular area, which is uncommon. So we report a uncommon case of EMC to discuss about our experience with relevant journal discussion.

EXPRESSIONS OF VASCULAR METASTASIS RELATED FACTORS IN MURINE ORTHOTOPIC TUMOR MODELS OF SALIVARY GLANDS (마우스에서 확립된 타액선 동위종양에서 혈관성 전이관련 인자의 발현)

  • Jang, Jae-Hyun;Kwon, Kwang-Jun;Park, Young-Wook
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.29 no.6
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    • pp.499-508
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    • 2007
  • Background and Purpose: Some subtypes of malignant salivary gland tumors such as adenoid cystic carcinoma (ACC) frequently result in distant metastasis of vascular origin, which are main causes of treatment failure. The reasons for the affinity for vascular metastatic potential are unclear. Therefore, molecular characteristics that influence the dissemination of metastatic tumor cells are important for the design of more effective treatment of salivary ACC. Tumor angiogenesis has been known to be essential for the distant metastasis of malignant cells. So, we determined expressions of vascular metastasis related factors in orthotopic (parotid) murine models of parotid ACC and compared with those in ectopic (subcutis) tumors of athymic mice. Experimental Design: Using specimens from murine parotid (orthotopic, experimental group) and subcutaneous (ectopic, control group) tumors, which have developed via transplantation of tumor cells, originated from human parotid ACC, we performed immunohistochemical assays with anti-vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF, FGF2), matrix metalloproteinase (MMP)-9, and interleukin (IL)-8 antibodies. We also performed immunohistochemical assays with VEGF receptor (VEGFR)-1, VEGFR-2, VEGFR-3, and phosphorylated VEGFR-2. Results: Transplantation of human ACC tumor cell $(5{\times}10^5)$ into the parotid and subcutis successfully resulted in orthotopic (parotid) and ectopic (subcutaneous) tumors in athymic mice. Immunohistochemical staining demonstrated higher expression of major angiogenic factors (VEGF, bFGF, MMP-9) in the orthotopic tumors than in ectopic tumors (P<0.05). But the expression level of angiogenic receptors were same in orthotopic and ectopic tumors of parotid ACC. Conclusion: VEGF, bFGF, and MMP-9 could be a good candidates for antiangiogenic therapy for the contol of vascular metastatic lesions of salivary ACC.

Clinical Guidelines to Diagnose and Manage Dental Patients with Hyposalivation and Xerostomia

  • Jeong-Kui Ku;Pil-Young Yun;Sungil Jang;Won Jung;Kyung-Gyun Hwang
    • Journal of Korean Dental Science
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    • v.16 no.1
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    • pp.9-22
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    • 2023
  • Xerostomia is defined as the subjective complaint of dry mouth with or without hyposalivation, which is insufficient salivary secretion from salivary gland. Xerostomia can lead to multiple oral symptoms such as dental caries, halitosis, burning mouth syndrome, and oral candidiasis, which can significantly impact the well-being of patients, especially in geriatric patients who may already have compromised health. Clinical findings of xerostomia include decreased salivary flow and alterations in salivary composition. These changes can lead to various oral health problems such as dental caries, periodontitis, swallowing and speaking difficulties, taste disturbances, halitosis, mucosal diseases, and burning mouth syndrome. Recognizing these clinical manifestations is essential for early diagnosis and appropriate management. Although several reasons and risk factors have been suggested for xerostomia such as aging, chemo-radiation therapy, systemic disease, and Sjögren's syndrome, the polypharmacy is recently highlighted especially in elderly patients. Understanding the etiology and risk factors associated with xerostomia is crucial for effective management. To manage xerostomia patients, a multidisciplinary guideline should be established beyond dental care. Through this literature review, we summarized consideration for diagnostic, therapeutic, nursing essentials for the clinical guideline. By addressing the underlying causes and implementing appropriate treatment strategies, healthcare professionals can improve the quality of life for individuals suffering from xerostomia.

Characterization of Intermediate Conductance $K^+$ Channels in Submandibular Gland Acinar Cells

  • Cho, Sung-Man;Piao, Zheng-Gen;Kim, Yoon-Bae;Kim, Joong-Soo;Park, Kyung-Pyo
    • The Korean Journal of Physiology and Pharmacology
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    • v.6 no.6
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    • pp.305-309
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    • 2002
  • There are some evidences that $K^+$ efflux evoked by muscarinic stimulation is not mainly mediated by large conductance $K^+$ (BK) channels in salivary gland. In this experiment, we therefore characterised non BK channels in rat submandibular gland acinar cells and examined the possibility of agonist effect on this channel using a patch clamp technique. Two types of $K^+$ channels were observed in these cells. BK channels were observed in 3 cells from total 6 cells and its average conductance was $152{\pm}7$ pS (n=3). The conductance of the another types of $K^+$ channel was estimated as $71{\pm}7$ pS (n=6). On the basis of the conductance of this channel, we defined this channel as intermediate conductance $K^+$ (IK) channels, which were observed from all 6 cells we studied. When we increased $Ca^{2+}$ concentration of the bath solution in inside-out mode, the IK channel activity was greatly increased, suggesting this channel is $Ca^{2+}$ sensitive. We next examined the effect of carbachol (CCh) and isoproterenol on the activity of the IK channels. $10^{-5}$ M isoproterenol significantly increased the open probability (Po) from $0.08{\pm}0.02$ to $0.21{\pm}0.03$ (n=4, P<0.05). Application of $10^{-5}$ M CCh also increased Po from $0.048{\pm}0.03$ to $0.55{\pm}0.33$ (n=5, P<0.05) at the maximum channel activity. The degree of BK channel activation induced by the same concentration of CCh was lower than that of IK channels; Po value was $0.011{\pm}0.003$ and $0.027{\pm}0.005$ in control and during CCh stimulation (n=3), respectively. The result suggests that IK channels exist in salivary acinar cells and its channel activity is regulated by muscaricinic and ${\beta}-adrenergic$ agonist. We conclude that IK channels also play a putative role in secretion as well as the BK channels in rat submandibular gland acinar cells.

Modification of Late Radiation Response of Rat Salivary Glands by Pentoxifylline and Diltiazem (쥐의 타액선 방사선조사 후 만성반응에 Pentoxifylline과 Diltiazem이 미치는 영향)

  • Suh, Hyun-Suk;Yang, Kwang-Mo;Kang, Yun-Kyung
    • Radiation Oncology Journal
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    • v.17 no.3
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    • pp.230-237
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    • 1999
  • Purpose : To elucidate the effects of pentoxifylline and diltiazem on the late response of the salivary glands of the rat after irradiation. Materials and Methods : Sixteen Sprague-Dawley rats were divided into 4 groups : (a) irradiation alone (b) irradiation with pentixifylline (PTX) (c) irradiation with diltiazem (DTZ) (d) irradiation with both PTX and DTZ. Irradiation was given in a single fraction of 16 Gy using 4 MV photon energy through an anterior port encompassing the left side of the salivary gland leaving the right side of salivary gland as a control. PTX, 20 mg/kg and/or DTZ, 50 mg/kg were infused intraperitoneally before irradiation, Two rats from each group were sacrificed on the 10th week and the rest was sacrificed on the 16th week after irradiation. Histopathologic examinations were undertaken for each section and the proportion of vacuolated cells out of the total number of cells under light microscopic fields was calculated. The statistical significance in the difference of the proportion of the vacuolated cells among the experimental groups was evaluated by a $x^2$-test. Results : Irradiated salivary glands of the 10th week group revealed markedly increased number of vacuolated cells compared to those of unirradiated control. The proportion of vacuolated cells was significantly reduced in both the PTX group (p value=0.001) and the combined PTX and DTX group compared to those of irradiation alone group. The DTZ alone group did not reveal the significant reduction of vacuolated cells compared to those of irradiation alone group (p value, >0.05). The 16th week groups revealed similar findings to those of the 10th week group, but the degree of chronic inflammatory cell infiltrates and interstitial fibrosis was increased and the number of acinar cells was reduced compared to those of the 10th week group. Conclusions : PTX significantly reduced the late radiation response of salivary glands, but DTZ did not reduce the same degree as PTX did. Taking the positive results of this study into consideration, it seems reasonable to apply PTX into the clinical trial for the head and neck irradiation to reduce the late radiation sequelae of salivary glands in the near future. At the same time the further experiment to clarify the subcellar mechni는 involved in PTX should be preceded.

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