• Archives of Craniofacial Surgery
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• v.20 no.6
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• pp.392-396
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• 2019

Renal cell carcinoma (RCC) represents 2% to 3% of human cancers and is aggressive, with metastatic capability. The frequent metastatic sites are lung, bone, and liver. Reports of RCC metastatic to skin, and especially scalp are rare. Here we present an 83-year-old woman who was diagnosed with RCC 19 years prior and had a metastatic scalp lesion. An 83-year-old woman presented with a red-to-purple, protruding lesion at the right parietotemporal area. Twenty-three years ago, a right renal mass was incidentally discovered on ultrasound through a routine medical examination. She underwent right nephrectomy for RCC 4 years later. Five months after nephrectomy, new lung nodules were observed. Fifteen years after nephrectomy, metastatic lesions were found in the pelvic bone. She visited dermatology department for evaluation of the new scalp lesion, a year before she first visited our department. Despite chemotherapy, the mass was gradually enlarged. She consulted the plastic surgery department for management of the metastatic RCC was successfully treated with total excision including a 1-cm safety margin, local flap, and STSG coverage. Complete healing was observed, without evidence of recurrence during a 7-month followup. Metastases to the skin are rare, but must be kept in mind because of its high metastatic ability and poor prognosis.

• Advances in pediatric surgery
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• v.12 no.2
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• pp.232-237
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• 2006

Abdominal cystic lymphangiomas arising from the mesentery, omentum and retroperitoneum are rare and occasionally confused with other cause of acute abdomen. Sixteen children who underwent surgery for abdominal cystic lymphangioma between 1984 and 2005 at the Division of Pediatric Surgery, Keimyung University Dongsan Medical Center were evaluated retrospectively. There were 9 boys and 7 girls. Age ranged from 12 days to 13 years (mean age: 4.7years). The cysts were located in the omentum (4 cases),mesentery (9 cases: jejunum: 3, colon: 6). retroperitoneum (2 cases) and pelvic cavity (one case). The cyst content was hemorrhagic (8 cases), serous (5 cases), and inflammatory (2 cases), and chyle (one). Prenatal diagnosis was made in 3. The clinical features were variable, but abdominal pain, mass, and abdominal distention in order. There were 3 emergency operations in patients with complicated cyst, who were suspected of having panperitonitis and volvulus preoperatively. Complete excision was accomplished in all cases. There was one mortalityin a newborn with E.coli sepsis. Intestinal obstruction developed in 2 cases in long-term follow-up. No recurrence was observed. Although intraabdominal lymphangioma arising from mesentery, omentum and retroperitoneum are rare, it should be considered as a possible cause of acute abdomen.

• Journal of Korean Neurosurgical Society
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• v.60 no.3
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• pp.327-334
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• 2017

To review recent advances in endoscopic techniques for treating intraventricular lesions via transcortical passage. Articles in PubMed published since 2000 were searched using the keywords 'endoscopy,' 'endoscopic,' and 'neuroendoscopic.' Of these articles, those describing intraventricular lesions were reviewed. Suprasellar arachnoid cysts (SACs) can be treated with ventriculo-cystostomy (VC) or ventriculo-cysto-cisternostomy (VCC). VCC showed better results compared to VC. Procedure type, fenestration size, stent placement, and aqueductal patency may affect SAC prognosis. Colloid cysts can be managed using a transforaminal approach (TA) or a transforaminal-transchoroidal approach (TTA). However, TTA may result in better exposure compared to TA. Intraventricular cysticercosis can be cured with an endoscopic procedure alone, but if pericystic inflammation and/or ependymal reaction are seen, third ventriculostomy may be recommended. Tumor biopsies have yielded successful diagnosis rates of up to 100%, but tumor location, total specimen size, endoscope type, and vigorous coagulation on the tumor surface may affect diagnostic accuracy. An ideal indication for tumor excision is a small tumor with friable consistency and little vascularity. Tumor size, composition, and vascularity may influence a complete resection. SACs and intraventricular cysticercosis can be treated successfully using endoscopic procedures. Endoscopic procedures may represent an alternative to surgical options for colloid cyst removal. Solid tumors can be safely biopsied using endoscopic techniques, but endoscopy for tumor resection still results in considerable challenges.

• Archives of Plastic Surgery
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• v.33 no.1
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• pp.124-126
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• 2006

Pachydermodactyly is a rare distinct form of fibromatosis characterized by acquired, asymptomatic dense fibrosis and fibroblastic proliferation around one or more proximal interphalangeal joints. Intralesional triamcinolone injection may be helpful in improving the clinical appearance. A 20-year-old unemployed female patient gave a four years history of progressive swelling of the fingers affecting predominantly the proximal interphalangeal joints of index fingers of left hand and index, middle fingers of right hand. There was no pain and tenderness. Physical examination, complete blood count, antinuclear antibody, rheumatoid factor were unremarkable and radiograph of both hands showed soft tissue swelling only without bony abnormality. We excised the redundant soft tissue from the both sides of proximal interphalangeal joint with longitudinal elliptical fashion. After operation, the fingers of the patient showed marked improvement cosmetically. There were no motor or sensory changes. Pachydermodactyly was first reported in 1996 in Korea. Histologic features include an increased dermal accumulation of collagen and occasionally an increased number of fibroblast. We report for one patient with pachydermodactyly treated with longitudinal elliptical excision and obtained an improvement of clinical appearance.

• Korean Journal of Head & Neck Oncology
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• v.27 no.1
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• pp.80-83
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• 2011

Paraganglioma is a relatively rare, generally benign and slow growing tumor arising from widely distributed paraganglionic tissue thought to originate from the neural crest. In the head and neck region, paraganglionic tissue is distributed in the superior and inferior paraganglia such as the carotid body, the vagal body, and the jugulotympanic region. Approximately 10% of patients with paraganglioma have a family history of such tumors. Multiple lesions can be found in 26% of patients with family history. It is important to distinguish between paraganglioma and atypical carcinoid tumor and medullary thyroid cancer. This can be done with histopathologic evaluation and immunohistochemical markers. Complete excision is recommended for the treatment of this tumor. Paraganglioma is particularly aggressive and rapid recurrence of paraganglioma is common after local resection. We present a case of malignant paraganglioma in the neck which recurred 2 months after local resection. We suppose that radiation therpay could be the last option for the treatment in this clinical setting.

• Korean Journal of Head & Neck Oncology
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• v.30 no.1
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• pp.23-27
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• 2014

Low-grade myofibroblastic sarcoma is a rare disorder of malignant soft tissue tumor and is usually occurred various regions that often manifests in the head and neck region. The most common clinical presentation of this entity is non-tender cervical lymphadenopathy. This disease usually presents high possibility of local recurrence and low possibility of distant metastasis. We report a rare case of low-grade myofibroblastic sarcoma occurring in the sternocleidomastoid muscle and invading to the mastoid tip. A 56-year-old male visited the clinic with a complaint of slowly growing postauricular mass for 6 months. Mass originating from sternomastoid muscle and invasion to mastoid tip was observed by imaging studies. Surgical complete excision with simple mastoidectomy was performed via modified facelift approach. The histopathologic findings revealed malignant spindle cell tumor with positive staining with smooth muscle actin. The patient has no recurrence for 2years without any complication.

• Annals of Clinical Neurophysiology
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• v.16 no.2
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• pp.74-76
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• 2014

Foot drop is usually derived from peroneal nerve injury. Traumatic causes of peroneal nerve injury are more common than insidious causes including metabolic syndromes and mass lesions. We present a case with common peroneal neuropathy due to schwannoma, which is extremely rare. Complete excision of the mass lead to a gradual improvement of the symptoms. Schwannoma should be considered as a cause of common peroneal neuropathy.

• Journal of Chest Surgery
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• v.46 no.5
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• pp.377-379
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• 2013

A primary giant cell tumor of the rib is very rare. The most common site of a giant cell tumor arising from the rib is the posterior arc. A giant cell tumor arising from the anterior arc of the rib is extremely rare. The treatment of a giant cell tumor of the rib is not well defined. Generally, a complete surgical resection is performed in a patient with a primary giant cell tumor of the rib. We report a case of a giant cell tumor arising from the anterior arc of the rib that was treated with a wide excision and chest wall reconstruction.

• Korean Journal of Head & Neck Oncology
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• v.13 no.2
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• pp.247-250
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• 1997

Bronchogenic cysts are thought to be uncommon developmental anomalies. They develop from small buds or diverticuli that separate from the foregut in the formation of the tracheo-bronchial tree. They are nearly always located near the tracheal bifurcation; However, these lesions can occur anywhere along the tracheo-bronchial tree. We experienced a case of cervical bronchogenic cyst presenting sorely as an anterior neck mass in a 26-year-old woman. The neck ultrasonography showed as $1.4{\times}1.1cm$ sized hypoechoic lesion with a well-defined margin on the isthmic portion of the thyroid gland. Excision of the mass was carried out. The mass was superfical to the strap muscle and was contained within the subcutaneous tissue in the midline without any connection to the trachea. Grossly, the mass was an oval-shaped cystic lesion which measured 1.5 cm in the greatest diameter. The cyst was filled with thick, yellow, jelly-like material and the inner surface was smooth and glistening. Microscopically, the cyst showed a lining of ciliated columnar epithelium, beneath which was a loose areolar stroma containing plaques of mucous glands and mature cartilage. We thought this cervical bronchogenic cyst appeared to represent an expression of complete aberrent accessory lung bud detachment from the primitive foregut.

• Korean Journal of Head & Neck Oncology
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• v.24 no.2
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• pp.194-196
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• 2008

Dermoid cysts are developmental anomalies that represent the simplest form of teratoma. They are the result of the sequestration of the skin along the lines of embryonic closure. These cysts of the head and neck are uncommon and account for 7% of all dermoid cysts. They are predominantly found in the orbit, floor of mouth, and nose. As a dermoid cyst of the parotid gland is extremely rare, it is often misdiagnosed preoperatively. By way of imaging modalities such as computed tomography, MRI and ultrasongraphy along with FNAB, it can be differentiated from many other cystic lesions of the parotid gland. We report a case of dermoid cyst of the parotid gland which masqueraded as lipoma before complete surgical excision.