• Proceedings of the KOR-BRONCHOESO Conference
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• 1981.05a
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• pp.12.3-12
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• 1981

Inverted papilloma of the nose and paranasal sinuses has been classified as a true neoplasm by most authors. Although these tumors are histologically benign, they tend to be act clinically in a malignant fashion. They are certainly characterized by the high recurrence after inadequate removal. The authors report 2 cases of the inverted papilloma which had been diagnosed as a nasal polyp for which an intranasal operation was performed. The polyp recurred and the total mass was removed at our E.N.T. department and proved to be an inverted papillcma by histologic examination.

• The Korean Journal of Pain
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• v.27 no.2
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• pp.174-177
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• 2014

Glomus tumors are a rare, benign neoplasm and 75% exist in the subungual region. Extradigital glomus tumors are much more difficult to diagnose because of their atypical location and symptoms. Furthermore, if their symptoms are similar to neuropathic pain, the patient can suffer from misdirected treatment due to misdiagnosis. It is essential to perform careful evaluation of the lesion itself in order to reduce misdiagnosis. Ultrasonography is a useful, non-invasive method that can be easily performed in the pain clinic for local evaluation and diagnosis. We report a case of misdiagnosed glomus tumor in the thigh which was properly diagnosed after ultrasonography.

• Journal of Yeungnam Medical Science
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• v.7 no.1
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• pp.145-149
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• 1990

Sclerosing hemangioma of the lung is uncommon benign neoplasm of uncertain histogenesis. Their radiologic appearance is relatively distinct and well defined. Recently we experienced 3 cases of sclerosing hemangioma of the lung in 54, 52, 51 years old women. The light microscopic findings are similar to the features reported by Liebow and Hubbell(1956).

• Investigative Magnetic Resonance Imaging
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• v.25 no.3
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• pp.201-207
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• 2021

Pleomorphic adenoma is the most common benign neoplasm of the salivary glands. Its three malignant variants include carcinoma ex pleomorphic adenoma, carcinosarcoma, and metastasizing pleomorphic adenoma. Among the subtypes of carcinoma ex pleomorphic adenoma, high-grade mucoepidermoid carcinoma has rarely been reported. Additionally, metastasizing pleomorphic adenoma is rare. We report the imaging findings of a high-grade mucoepidermoid carcinoma ex metastasizing pleomorphic adenoma of the parotid gland and parapharyngeal space in a 42-year-old man.

• Kosin Medical Journal
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• v.33 no.2
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• pp.228-234
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• 2018

Ceruminous adenoma is a benign neoplasm of the ceruminous gland, and its development in human external auditory canal is very rare. Due to the limited number of cases, controversy still exists about nomenclature, classification, diagnosis and its treatment. Recently we experienced a 55 years old woman who was diagnosed with ceruminous adenoma of the external auditory canal, and who was treated with wide excision. So we report this uncommon case in combination with a review of the literature.

• Archives of Craniofacial Surgery
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• v.20 no.1
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• pp.48-50
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• 2019

Eccrine porocarcinoma is a rare malignant tumor arising from the intraepidermal ductal portion of the eccrine sweat gland. It develops either spontaneously or from a long standing benign eccrine poroma. This entity usually affects older people and is commonly located on the lower extremities, the trunk, and the head. We report a case of eccrine porocarcinoma on the left cheek in an 85-year-old male. In our case, the tumor was treated with wide excision and postoperative adjuvant radiation therapy. The patient recovered well without local recurrence and distant metastasis during the 14-month follow-up period. Wide excision and postoperative adjuvant radiation therapy can be considered as a safe and effective treatment option in treating patients with eccrine porocarcinoma.

• Journal of Chest Surgery
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• v.52 no.1
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• pp.51-54
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• 2019

Castleman disease is a relatively rare disease, characterized by well-circumscribed benign lymph-node hyperplasia. The disease may develop anywhere in the lymphatic system, but is most commonly reported as unicentric Castleman disease in the mediastinum along the tracheobronchial tree. It is usually asymptomatic and detected on plain chest radiography as an incidental finding. We report an incidentally detected case of Castleman disease in the paravertebral space that was preoperatively diagnosed as a neurogenic tumor and treated by complete surgical resection.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.30 no.1
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• pp.69-71
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• 2019

Pyogenic granuloma is one of the benign vascular neoplasm. The nomenclature is misnomer because pyogenic granuloma is not related to infection and granuloma. It represent histopathologically lobular capillary hemangioma. It is most commonly occurred on skin followed by oral cavity such as gingiva, lip, tongue and buccal mucosa. Herein, we report a extremely rare case of pyogenic granuloma which was developed on larynx of a 81 year-old male with review of literature.

• Imaging Science in Dentistry
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• v.51 no.4
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• pp.461-466
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• 2021

Fibro-osseous lesions are a poorly defined category of conditions affecting the jaws and craniofacial bones, and include developmental lesions, reactive or dysplastic lesions, and neoplasms. Fibrous dysplasia and ossifying fibroma are the 2 main types of fibro-osseous lesions affecting the jaw, and ossifying fibroma is a true benign neoplasm of the bone-forming tissues with several well-recognized variants ranging from innocuous to extensively aggressive lesions. However, multiple simultaneous fibro-osseous lesions of the jaw bones involving all quadrants are exceedingly rare. One such case diagnosed by conventional radiography and computed tomography is discussed here.

• Journal of the Korean Society of Radiology
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• v.83 no.1
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• pp.212-217
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• 2022

An epidermoid cyst is a benign tumor found anywhere in the body. However, the occurrence of epidermoid cysts in the thymus is extremely rare, with only six cases reported worldwide. The correct diagnosis of thymic epidermoid cysts is often difficult due to the unusual location and nonspecific imaging findings. Herein, we present a case of a thymic epidermoid cyst in a 37-year-old female with clinical information and chest CT findings. Further, we have reviewed previous literature reports describing imaging findings of thymic epidermoid cysts.