A Case of Hyperparathyroidism Caused by Intrathyroidal Parathyroid Adenoma

Hyperparathyroidism is a common endocrine disorder, but intrathyroidal parathyroid adenoma is extremely rare. We report a on a case of hyperparathyroidism caused by intrathyroidal parathyroid adenoma. This case is important in that it affects an effective test for the diagnosis of intrathyroidal parathyroid adenoma, and shows the decision of the treatment process and the results.

A Case of Hyperparathyroidism Caused by Intrathyroidal Parathyroid Adenoma

Hyperparathyroidism is a common endocrine disorder, but intrathyroidal parathyroid adenoma is extremely rare. We report a on a case of hyperparathyroidism caused by intrathyroidal parathyroid adenoma. This case is important in that it affects an effective test for the diagnosis of intrathyroidal parathyroid adenoma, and shows the decision of the treatment process and the results.

Epithelioid Variant of High-Grade Myxofibrosarcoma in the False Vocal Fold: A Case Report / 대한이비인후과학회지

Myxofibrosarcoma (MFS) is a histologic subtype of malignant fibrous histiocytoma (MFH), with a predominant myxoid component. MFS is characterized by locally aggressive behavior and a high rate of local recurrence, however, with a good prognosis. Head and neck MFS accounts for 3% of all cases of MFS. To date, only two cases of laryngeal MFS have been reported. Owing to the rarity of MFS, the clinical characteristics and optimal treatment options remain controversial. Surgical resection with a clear margin is considered the treatment of choice. Compared to traditional MFS tumors, epithelioid variants have worse prognosis. Other factors associated with a poor prognosis of MFS tumors include inadequate surgical margins, large tumor size, old age, and high-grade tumors. Herein, we report a case of high-grade epithelioid variant MFS located in the false vocal fold, requiring total laryngectomy to obtain an adequate surgical margin. To our knowledge, this is the first case report of epithelioid variant of high-grade MFS presenting in the larynx.

A Case of a Temporary Endotracheal Stent for Airway Management in a Patient with Primary Thyroid Lymphoma / 대한이비인후과학회지

Primary thyroid lymphoma is a rare malignancy that can grow rapidly and compress the airway. In such cases, a tracheostomy or thyroidectomy is generally required. Here, we report a case of a 76-year-old woman diagnosed with primary thyroid diffuse large B-cell lymphoma (DLBL), with dyspnea attributed to tracheal compression by the enlarged thyroid. The patient’s poor general condition meant that thyroidectomy was considered challenging. Therefore, a temporary endotracheal silicone stent was successfully inserted to maintain the airway, as tracheal stenting has been shown to be an effective treatment for both benign and malignant obstructive airway diseases. We conclude that, in patients with primary thyroid DLBL who present with airway compression but are not eligible for surgery, tracheal stent insertion can maintain the airway and allow time for chemotherapy to be administered.

A Case of Malignant Lymphoma Misdiagnosed as Acute Tonsillitis with Subsequent Lymphadenitis / 고신대학교의과대학학술지

A 56-year-old female presented with clinical features of acute tonsillitis with subsequent cervical lymphadenitis. After taking empirical antibiotics for 1 week, the acute infection symptoms and signs were resolved. However, an asymmetric enlargement of the left palatine tonsil with ipsilateral neck swelling remained. Subsequent tonsillectomy and lymph node excisional biopsy were performed due to the possibility of malignancy. The patient was eventually diagnosed as malignant lymphoma according to pathological confirmation. We demonstrate the diagnostic challenges in such a rare case and emphasize the importance of differentiating malignant lymphoma from an atypically presenting acute infectious disease.

Prognostic Value of Combined Programmed Cell Death 1 Ligand and p16 Expression Predicting Responsiveness to Radiotherapy in Patients with Oropharyngeal Squamous Cell Carcinoma / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES@#This study examined the expressions of p16 and the programmed cell death 1 ligand (PD-L1) in patients with oropharyngeal cancer (OPC) treated with radiotherapy (RT) to identify the correlation between p16 and PD-L1 expression, and to examine the prognostic significance of these markers for OPC patients receiving RT.SUBJECTS AND METHOD: Forty-eight OPC patients diagnosed and treated at a tertiary referral hospital were enrolled in this retrospective analysis. Patients were initially treated with RT or chemoradiotherapy (CRT) with curative intent and completed the planned schedule. Expression of p16 and PD-L1 by primary tumors was evaluated by immunohistochemistry, and results were interpreted separately and dichotomized according to outcome analyses.@*RESULTS@#Of the 48 patients, 25 (52.1%) expressed p16 and 15 (31.3%) expressed PD-L1. Expression of these markers showed a mutual positive correlation (p=0.046). Positive PD-L1 expression was associated with poor complete remission (CR) rates after RT (p=0.040). Positive p16 expression was associated with better recurrence-free survival (RFS) (p=0.004) but not overall survival (OS) (p=0.192). PD-L1 expression showed no independent association with survival (p>0.05); however, PD-L1 expression tended toward poorer RFS, even in p16-positive individuals.@*CONCLUSION@#There was a positive correlation between the expression of p16 and PD-L1 in OPCs. PD-L1 expression was associated with poorer CR rates after RT or CRT. PD-L1 alone did not show an association with RFS or OS, but when combined with p16, it tended toward poorer RFS, even in p16-positive cases.

A Case of Leiomyosarcoma of the Parotid Gland / 대한이비인후과학회지

Leiomyosarcoma is a malignant tumor originating from the smooth muscle tissue, found mostly in the genitourinary tract, gastrointestinal tract and peritoneum. However, leiomyosarcoma of the parotid gland is extremely rare as there is only smooth muscle in the blood vessels of the parotid gland. There has been a only single case of metastatic leiomyosarcoma reported in the English journal. Herein we report an extremely rare case of leiomyosarcoma of the parotid gland of a 66-year-old man who initially suffered from primary renal leiomyosarcoma.

A Case of Retrophareangeal Tuberculosis Presenting as a Hypernasal Speech

Tuberculosis of the retropharynx is extremely rare. The diagnosis is frequently delayed because of its anatomical location and atypical symptom. It would be crucial to consider tuberculosis infection as a possible source of abscess and should be mindful about the tests to diagnose it. We experienced a 23-year-old man with retropharyngeal abscess caused by tuberculosis presenting hypernasality and hoarseness in the throat. In this article, we reviewed the etiology, diagnosis, and treatment of this case, with a review of literatures.

A Case of Dermatofibrosarcoma Protuberans was Misdiagnosed as Keloid of the Anterior Neck / 대한이비인후과학회지

Dermatofibrosarcoma protuberans is a rare type of cancer, a soft tissue sarcoma that develops in the deep layers of skin. It is a locally aggressive tumor with a high recurrence rate but the metastasis rarely occurs. The first sign of dermatofibrosarcoma protuberans is often a small bump on the skin. It may resemble a deep-seated pimple of rough patch of skin. The tumor typically grows slowly and can become a raised nodule. Therefore, it is likely to be misdiagnosed as keloid, basal cell carcinoma and scleroderma. We recently experienced a case of dermatofibrosarcoma protuberans in a 63-year-old man, who presented with anterior lower neck mass. We present this case with a review of the literature.

Fine-Needle Aspiration Cytology of Carcinosarcoma in the Salivary Gland: An Extremely Rare Case Report

Carcinosarcoma of the salivary gland is an extremely rare tumor that is composed of both malignant epithelial and mesenchymal components. Diagnosing carcinosarcoma with fine-needle aspiration cytology is challenging because of its overlapping cytomorphologic characteristics with other high-grade malignant salivary gland tumors. Among the many features, including pleomorphic oncocytoid epithelial components, necrotic background, and mitoses, recognizing the singly scattered atypical spindle cells is most essential in carcinosarcoma. We present a case of a 66-year-old male patient with characteristic features of carcinosarcoma, who was successfully treated by wide local excision and subsequent radiation therapy.

A Case of Desmoid-Type Fibromatosis Occurring Around the Transverse Process of Cervical Vertebra / 대한이비인후과학회지

Fibromatosis is generally a benign tumor that arises from the musculoaponeurotic tissues of the body, rarely occurring in the head and neck region. This can be treated with a good prognosis, but sometimes recurs as a local invasion. Preoperative core needle biopsy and MR images are necessary to diagnose preoperatively and outline the tumor extent. The mainstay of treatment is complete surgical excision. Nonetheless, an excision is often difficult because of the complex anatomy or proximity of the tumor to vital structures in the head and neck region. We report a rare case of desmoid-type fibromatosis that occurred in the neck, closely attached to the transverse process of the cervical vertebra. The present article covers an extensive analysis of the case with a review of the related literature.

A Case of Intrathyroid Thyroglossal Duct Cyst

An intrathyroid thyroglossal duct cyst (TGDC) presented as an anterior neck mass in a 62-year-old male without history of prior thyroid disease or infection. This cyst was clinically indistinguishable from a thyroid nodule. In addition to that, fine needle aspiration cytology revealed normal–looking squamous cells. Diagnosis, work-up, management approach, and treatment of intrathyroid TGDC are discussed as well as distinguishing features between intrathyrod TGDC with tract and without tract. This is the very rare case of intrathyroid TGDC in Korean population and the possibility of intrathyroid TGDC should remain in the differential diagnosis of thyroid nodule.

A Case of Dermatofibrosarcoma Protuberans was Misdiagnosed as Keloid of the Anterior Neck / 대한이비인후과학회지

Dermatofibrosarcoma protuberans is a rare type of cancer, a soft tissue sarcoma that develops in the deep layers of skin. It is a locally aggressive tumor with a high recurrence rate but the metastasis rarely occurs. The first sign of dermatofibrosarcoma protuberans is often a small bump on the skin. It may resemble a deep-seated pimple of rough patch of skin. The tumor typically grows slowly and can become a raised nodule. Therefore, it is likely to be misdiagnosed as keloid, basal cell carcinoma and scleroderma. We recently experienced a case of dermatofibrosarcoma protuberans in a 63-year-old man, who presented with anterior lower neck mass. We present this case with a review of the literature.

Incidence of Gastric Cancer in Patients with Laryngeal Cancer

BACKGROUND/AIMS: Gastric cancer (GC) is the second most common cancer in Korea and the most common in men in the south of the country. We investigated the incidence of synchronous GC in patients with head and neck squamous cell carcinoma (HNSCC) in the southern part of Korea. MATERIALS AND METHODS: We retrospectively reviewed the medical records of HNSCC patients treated between 2011 and 2014. In patients with synchronous GC, evaluation included a history of smoking and alcohol consumption, endoscopic findings, Campylobacter-like organism (CLO) test, and immunohistochemical analysis of preserved HNSCC tissues. RESULTS: Analysis of the records of 153 HNSCC patients revealed tumors of the larynx in 56 patients (36.6%), of the pharynx in 74 patients (48.4%), and tumors at other locations in 23 patients (15.0%). The mean age of patients was 66.0 years, and the men:women ratio was 8:1. Synchronous cancers were detected in 12 patients. We observed esophageal squamous cell carcinoma (SCC) in five patients (3.3%), and gastric adenocarcinoma in seven patients (4.6%). Synchronous GC was detected in patients with laryngeal SCC. All cases of GC were classified as early GC. CONCLUSIONS: Synchronous GC was as frequent as esophageal SCC in patients with HNSCC, and all cases of GC were observed to be early stage cancers in this study. Thorough endoscopic examination should be performed in patients with laryngeal cancer to detect the presence of synchronous GC.

A Case of Hyalinizing Trabecular Adenoma of the Thyroid Gland

Hyalinizing trabecular adenoma of the thyroid gland is a rare benign neoplasm. It is characterized by an encapsulated nodule, trabecular arrangement of polygonal, oval, elongated cells, and hyalinized stroma. It is easily confused with medullary thyroid carcinoma or papillary thyroid carcinoma. Distinguishment with pathologic finding and immunohistochemical studies are needed to make a definite diagnosis. We recently experienced a case of hyalinizing trabecular adenoma of the thyroid gland. A 73-year-old woman present with an incidentally detected left thyroid mass. Fine needle aspiration was performed and papillary thyroid carcinoma was suspected. However, the surgical specimen revealed a hyalinizing trabecular adenoma. We present this case with a review of the literature.

Malignant Solitary Fibrous Tumor of the Parotid Gland / 대한이비인후과학회지

Solitary Fibrous tumor is usually arising in the pleura of the thoracic cavity and it has been described in a variety of extrapleural sites including the abdominal cavity, soft tissue, upper respiratory tract and rarely in head and neck region. We experienced a rare case of solitary fibrous tumor in the parotid gland. A 49-year-old woman presented with a painless mass in the left parotid. The mass was well-demarcated and easily dissected, and it showed a patternless arrangement of potential malignant spindle cells in a fibrotic background and prominent vascular structures. In immunochemistry, the mass cells were positive for CD34, vimentin, and negative for actin, S-100 protein, and cytokeratins. Therefore, the parotid mass diagnosed as SFT. During the 24 months of follow-up, there was no recurrence of tumor growth.

A Case of Mucosa-Associated Lymphoid Tissue Lymphoma in Sublingual Glands without Autoimmune Disease / 대한이비인후과학회지

Mucosa-associated lymphoid tissue (MALT) lymphomas are low-grade extranodal B-cell lymphomas that may involve various sites in the head and neck including the thyroid, salivary, and lacrimal glands. In particular, primary salivary gland MALT lymphoma is rare, with sublingual gland tumors especially rarer and frequently malignant. In Korea, there has been no reported case of MALT lymphoma in sublingual glands. Here we report a case of a MALT lymphoma in the sublingual gland.

Carotid sparing intensity modulated radiotherapy on early glottic cancer: preliminary study

PURPOSE: To compare the dose distribution between carotid sparing intensity modulated radiotherapy (IMRT) and opposed lateral field technique (LAFT), and to determine the effects of carotid sparing IMRT in early glottic cancer patients who have risk factors for atherosclerosis. MATERIALS AND METHODS: Ten early glottic cancer patients were treated with carotid sparing IMRT. For each patient, the conventional LAFT plan was developed for comparison. IMRT and LAFT plans were compared in terms of planning target volume (PTV) coverage, conformity index, homogeneity index, and the doses to planning organ at risk volume (PRV) for carotid arteries, spinal cord and pharyngeal constrictor muscle. RESULTS: Recurrence was not observed in any patients during the follow-up period. V95% for PTV showed no significant difference between IMRT and LAFT plans, while V100% was significantly higher in the IMRT plan (95.5% vs. 94.6%, p = 0.005). The homogeneity index (11.6%) and conformity index (1.4) in the IMRT plan were significantly better than those in the LAFT plans (8.5% and 5.1, respectively) (p = 0.005). The median V5Gy (90.0%), V25Gy (13.5%), and V50Gy (0%) for carotid artery PRV in the IMRT plan were significantly lower than those in the LAFT plan (99.1%, 89.0%, and 77.3%, respectively) (p = 0.005). CONCLUSION: Our study suggests that carotid sparing IMRT can significantly decrease the dose to carotid arteries compared to LAFT, and it would be considered for early glottic cancer patient with high risk of atherosclerosis.

The Analysis of Changes of Tonsillectomy after Diagnosis Related Group Based Payment System: Review of the Data Given by the Health Insurance Review & Assessment Service / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: Diagnosis by Related Groups (DRG), a system forcibly implemented in all medical institutions from July 2013, was applied to tonsillectomy and adenoidectomy in the field of Otorhinolaryngology. We analyzed the changes in medical costs and evaluated the efficiency of the DRG system by analyzing the data collected before and after the DRG implementation. SUBJECTS AND METHOD: We analyzed the total number of cases, total medical costs and per charge for tonsillectomy and adenoidectomy using the data from the Korean National Health Insurance from 2011 to 2014. We compared the number and cost of tonsillectomy and adenoidectomy by hospital type, region, and patient age. RESULTS: The total number of tonsillectomy and adenoidectomy after the application of DRG systems in July 2013 in all medical institutions was reduced, but the total costs showed a tendancy to increase, resulting in an increase per charge of case. The number of tonsillectomy and adenoidectomy was decreased in general and specialized hospitals, but the costs were increased after DRG systems. CONCLUSION: Medical costs per charge of case related to tonsillectomy and adenoidectomy was higher in the DRG system than in the 'fee for service' system. Increased medical costs, considered to be the most likely cause of patient copayments, are recognized in the DRG system. The results showed that saving effect of medical costs was not significant in the DRG system; it may appear to relieve patient burden in the short term, but the financial state of national health insurance is worsening.

A Case of Schwannoma of the Tongue Base / 대한이비인후과학회지

Schwannomas are benign peripheral nerve sheath tumors. It is found rarely in the oral cavity but most commonly in the tongue followed by the palate, floor of mouth, buccal mucosa, and mandible. Because schwannoma of the base of tongue is exceedingly rare, it is often not immediately included in the differential diagnosis, causing delay in identification and treatment. We report here, with a review of the literature, a case of schwannoma of the base of tongue, which was misdiagnosed as a lingual thyroid. A 28-year-old man presented with a base of tongue mass, which was first detected a month ago. The preoperative diagnosis was lingual thyroid on the basis of the physical findings and computerized tomographic findings. The permanent pathologic report of the mass was schwannoma. Postoperatively, the patient showed no problem with tongue function and wound healing.