• Radiation Oncology Journal
• /
• 제16권3호
• /
• pp.251-258
• /
• 1998

목적 : 수술과 방사선치료를 받은 이하선 악성종양에서 국소 종양 제어율에 영향을 주는 요인을 알기 위하여 본 연구를 수행하였다. 대상 및 방법 : 1986년부터 1995년까지 전남대학교병원에서 이하선 악성 종양으로 수술과 방사선 치료를 함께 받은 26명을 대상으로 하였다. 대상 환자의 연령 분포는 14세부터 72세까지였고 중앙간은 55세였다. 조직학적 유형별 분포는 10명이 점액표피양암종, 7명이 편평상피세포암, 4명이 포상세포암, 4명이 선양성낭종암, 1명이 선암이었다. 수술은 15명이 이하선 전절제술, 7명이 표재성 절제술, 4명이 아전절제술을 받았다. 안면신경이 절제된 경우는 5명 있었다. 수술 후 병리학적으로 잔존 병변이 있었던 경우가 4명, 절제연 양성이 4명이었다. 방사선치료는 선형가속기의 광자선과 전자선속을 사용하였다. 26명 중 11명은 광자선만으로 치료하였고 전자선이 병용된 경우는 15명이었으며 전자선량은 900 cGy부터 3800 cGy (중앙값: 1760 cGy)까지였다. 이하선종양 부위에 조사된 총방사선량은 5000 cGy부터 7560 cGy (중앙값 : 6020 cGy)까지였다. 대상 환자들의 최소추적기간은 2년이었다. 국소종양제어율의 산출은 Kaplan-Meier법을 이용하였고 단변량분석에는 generalized Wilcoxon test, 다변량분석에는 Cox 모델을 이용하였다. 결과 : 방사선 치료 후 국소종양의 재발은 25명 중 5명 (19$\%$)에서 관찰되었으며 국소종양제어율은 5년에 77$\%$였다. 환자의 5년 생존율은 70$\%$였다. 성별, 연령 (>60세), 종양크기 (>4 cm), 수술소견상 경부림프절 침범과 신경 침범, 절제연 침범 여부 및 총방사선량 (>60 Gy)의 요인이 국소 종양 제어율에 미치는 영향을 단변량 분석한 결과 종양 크기 (p=0.002), 절제연 침범 여부(p=0.011)에 따라 국소종양제어율에 있어서 통계학적으로 의의가 있는 차이를 보였다. 같은 요인들에 대한 다변량 분석에서는 종양 크기 (p=0.022)만이 국소 종양 제어율에 관련이 있는 것으로 나타났다. 결론 : 국소종양 제어율에 영향을 주는 여러가지 예후 인자들의 다변량 분석에서 종양 크기만이 의의가 있었으나 앞으로 더욱 많은 환자를 대상으로 연구가 요구된다.

• 생명과학회지
• /
• 제18권1호
• /
• pp.16-22
• /
• 2008

개에서의 유선 종양진단은 총 49 case 중에서 Human epidermal growth factor receptor (HER-2/neu, c-erbB-2), Epidermal growth factor receptor (EGFR), Activated leukocyte cell adhesion molecule (ALCAM) 등 면역조직화학적염색법을 실시하였다. 우선 49 case를 두 그룹으로 즉: 양성종양그룹 (22 case)과 악성종양그룹 (27 case)으로 구분하였다. 면역조직화학적염색법의 분석결과 HER-2/neu의 발현은 양성종양에서는 31.8% (7/22), 악성종양에서는 29.6% (8/27)의 발현율을 보였고, EGFR의 발현은 양성종양에서는 27.3% (6/22), 악성종양에서는 22.2% (6/27)의 발현율을 보였으며, ALCAM의 발현은 양성종양에서는 40.9% (9/22), 악성종양에서는 7.4% (2/27)의 발현율을 보였다. 결론적으로 개에서의 유선종양진단의 발현율은 사람에서 보고된 것($25%{\sim}30%$)과 비슷하게 나타났으며 임상진단분야에서 HER-2/neu항체로 개에서의 유선종양진단에서 유용한 평가수단으로 적용될 수 있으리라 사료된다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권15호
• /
• pp.6041-6046
• /
• 2014

Objective: Liposarcoma (LPS) is the most common soft tissue sarcoma and accounts for approximately 20% of all mesenchymal malignancies, often occurring in deep soft tissue of retroperitoneal space. Accurate preoperative diagnosis is therefore necessary. We explored whether computed tomography (CT) could be used to differentiate between the various types of retroperitoneal liposarcoma (RPLS). Method: Forty-seven cases of RPLS, diagnosed surgically and histologically, were analyzed retrospectively. CT features were correlated with postoperative pathological appearance. Results: The study radiologist identified 29, 11, 2, 2 and 3 RPLS as atypical lipomatous tumor/well-differentiated liposarcoma (ALT/WDL), dedifferentiated liposarcoma (DDL), myxoid/round cell liposarcoma (ML/RCL), pleomorphic liposarcoma (PL) and mixed-type liposarcoma. Analysis of CT scans revealed the following typical findings of the different subtypes of RPLS: ALT/WDL was mainly visible as a well-delineated fatty hypodense tumor with uniform density and integrity margin; DDL was marked by the combination of focal nodular density and hypervascularity. ML/RCL, PL and mixed liposarcoma showed malignant biological behaviour and CT findings need further studies. Conclusions: CT scanning can reveal important details including internal components, margins and surrounding tissues. Based on CT findings, tumor type can be roughly evaluated and biopsy location and therapeutic scheme guided.

• 치과방사선
• /
• 제23권1호
• /
• pp.181-187
• /
• 1993

The osteosarcoma is the most co1t1.mon primary malignant lesion of bone, even so it is relatively rare tumor in the jaw bones. It is derived from undifferentiated mesenchymal elements of bone, which from neoplastic osteoid and osseous tissue. It may affected primarily young adult males and more frequently mandible than maxilla. Mass, swelling and pain are the most presenting symptoms. Radiographic appearance will be sclerotic, in which bone formation is excessive: osteolytic, in which bone destruction predominates: and mixed, in which sclerotic and osteolytic changes are intermingled. We report a case of osteosarcoma on the mandibular ramus area in a 20 years old male with a brief review of the concerned literatures.

• Advances in pediatric surgery
• /
• 제11권2호
• /
• pp.107-114
• /
• 2005

Primary liver tumors are uncommon in childhood, with a relative frequency of 3 % of all childhood tumors. Seventy-three cases of pediatric primary liver tumors operated on at single institution between 1986 and 2002 were reviewed. Malignant tumors included 37 cases of hepatoblastoma, 11 hepatocellular carcinomas, 6 undifferentiated (embryonal) sarcomas, and 1 mixed germ-cell tumor. Benign tumors constitute only 24.6 % of liver tumors, including 7 hemangioendotheliomas, 5 mesenchymal hamartomas, 3 congenital cysts, and one each with focal nodular hyperplasia and hemangioma. The common presenting clinical features were abdominal mass or abdominal distension. Anatomical hepatic resections were carried out in 38 cases, and nonanatomical resections in 34 cases. One patient died of a direct result of hepatic resection (1.4 %). The complication rate was 16.4 %.

• 대한세포병리학회지
• /
• 제19권2호
• /
• pp.173-177
• /
• 2008

Epithelial-myoepithelial carcinoma (EMC) is a rare low grade malignant tumor of the salivary glands and it shows a characteristic biphasic population of epithelium and myoepithelium. It shows various cytologic and histologic features, so making an exact diagnosis is difficult. We report here on two cases of epithelial-myoepithelial carcinoma arising from the parotid gland and we compare the cytologic findings of the aspirated samples with the histologic findings of the tumors. We think the finding of mixed pattern of large, clear myoepithelia and small epithelia is the most valuable finding in the diagnosis of EMC.

• Imaging Science in Dentistry
• /
• 제49권3호
• /
• pp.235-240
• /
• 2019

Osteosarcoma is the most common primary bone tumor after plasma cell neoplasms. Osteosarcoma has diverse histological features and is characterized by the presence of malignant spindle cells and pluripotent neoplastic mesenchymal cells that produce immature bone, cartilage, and fibrous tissue. Osteosarcoma most frequently develops in the extremities of long bones, but can occur in the jaw in rare cases. The clinical and biological behavior of osteosarcoma of the jaw slightly differs from that of long-bone osteosarcoma. The incidence of jaw osteosarcoma is greater in the third to fourth decades of life, whereas long-bone osteosarcoma mostly occurs in the second decade of life. Osteosarcoma of the jaw has a lower tendency to metastasize and a better prognosis than long-bone osteosarcoma. Radiographically, osteosarcoma can present as a poorly-defined lytic, sclerotic, or mixed-density lesion with periosteal bone reaction response. Multi-detector computed tomography is useful for identifying the extent of bone destruction, as well as soft tissue involvement of the lesion. The current case report presents a fibroblastic osteosarcoma involving the left hemimandible with very unusual radiographic features.

• Archives of Plastic Surgery
• /
• 제34권4호
• /
• pp.504-507
• /
• 2007

Purpose: Chondroid syringoma, previously known as 'mixed tumor of the skin', is a rare benign tumor. It usually presents an asymptomatic solitary firm intradermal or subcutaneous slowly growing nodule. It occurs frequently in the head and neck region of middle-aged men. We would like to report an uncommon chondroid syringoma about the clinical and histologic presentation. about the clinical and histologic presentation. Methods: We experienced two cases of chondroid syringoma on the nose and the upper lip, each other. Both masses were totally excised with clear margin. Results: On histologic examination, the masses showed a biphasic pattern-an epithelial component exhibiting apocrine/eccrine differentiation and a stromal component exhibiting myxoid/collagenous change-consistent with the diagnosis of chondroid syringoma. There have been no evidence of recurrence and malignant transformation during postoperative follow-up. Conclusion: There is no one distinctive clinical feature that is specific for chondroid syringoma. However, it should be included in the differential diagnosis of a solid nodule in head and neck region with long standing duration, such as epidermal inclusion cyst, pilomatrixoma, dermoid cyst, sebaceous cyst, neurofibroma, and basal cell carcinoma.

• 한국동물위생학회지
• /
• 제41권1호
• /
• pp.57-61
• /
• 2018

Canine peripheral nerve sheath tumors (PNSTs) are spindle cell tumors that arise from Schwann cells, perineural cells, fibroblasts or all of them. Based on the morphology and biologic behavior, PNSTs are divided into benign PNST (BPNST) and malignant PNST (MPNST) forms. The aim of this study is to diagnose the two cases of neoplastic tissue samples with features of PNSTs by the histopathology and immunohistochemistry. The study was performed using two specimens from small animal clinic. The first case, A was a mass, 3~4 cm in diameter, extruded from vaginal mucosa of 10-year-old spayed female mixed-breed dog. And the second case, B was a subcutaneous mass, 1.5 cm in diameter, which is originated from right hind leg of 9-year-old castrated male mixed-breed dog. Two cases were stained with hematoxylin and eosin (H&E) for histopathological examination. And also immunohistochemistry (IHC) was performed by the avidin-biotin peroxidase complex (ABC) method with antibodies specific for the following proteins: S-100 protein, smooth muscle actin (SMA) and epidermal growth factor receptor (EGFR). In results, Antoni B schwannoma pattern characterized by pleomorphic, round and fusiform polygonal cells was seen in A. In B, Antoni A pattern, densely packed spindle cells arranged in interlacing bundles was seen in addition to Antoni B pattern. In IHC, cytoplasms of neoplastic cells were diffusely labeled for S-100 expression in A and B. For SMA, both A and B show negative expression. And for EGFR, A shows negative expression but B shows partially positive expression in areas of Antoni B schwannoma pattern. The histopathologic features of two cases coupled with the S-100 immunoreactivity led to a diagnosis of PNST. For SMA, both A and B show negative expression. The diagnosis of A will be a BPNST with the negative result and B will be a MPNST with the positive result for EGFR.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제31권2호
• /
• pp.170-177
• /
• 2005

The pleomorphic adenoma is well recognized as the most common salivary neoplasm. We examined 49 patients who had received surgical excision of the pleomorphic adenoma from 1989 to 1998 with over 5 years follow-up period. We retrospectively evaluated the patients' age, sex, chief complaints, surgical methods, and recurrence or complication rates after analysis of one's clinical and surgical records. The results are as follows : 1. There were 15 cases in parotid gland, 23 cases in palate, 8 cases in submandibular gland, and 3 cases in cheek. The ratio of male to female was 1 : 1.13. The mean age was 44. The tumor of submandibular gland occurred in more younger age than that of other salivary gland. 2. In 15 patients of parotid pleomorphic adenoma, there was 1 case(6.7%, 1/15) of recurrence. That was transformed into the malignant pleomorphic adenoma after 4 years of first surgery. We performed superficial parotidectomy of 9 cases(56.2%, 9/16), total parotidectomy of 6 cases(37.5%, 6/16), and radical parotidectomy of 1 case(6.3%, 1/16). 3. We used the rotational Sternocleidomastoid muscular flap to cover the exposed facial nerve in 12 cases(75%) after parotidectomy(7 cases of superficial parotidectomy and 5 cases of total parotidectomy). We could see 3 cases(18.7%) of facial nerve palsy and 1 case(6.3%) of Frey's syndrome after parotidectomy. We examined Frey's syndrome in only 1 case which was not used SCM muscular flap after parotidectomy. 4. In 23 patients of palatal pleomorphic adenoma, there were 2 cases(8.7%) of recurrence. In recurrence cases, We performed re-excision after 4 and 5 years of first surgery, respectively. We preserved partial thin overlying palatal mucosa during tumor excision in 5 cases(20%), which were proved as benign mixed tumor in preoperative biopsy. That mucosa-preserved cases had thick palatal mucosa, did not show mucosa ulceration and revealed well encapsulated lesions in preoperative CT. 5. In palatal tumors, we could see the 13 cases(52%) of bony invasion in preoperative CT views and the 4 cases(16%) of oro-nasal fistula after tumor excision. In two cases of recurrence, one(20%, 1/5) was in palatal mucosa-preserved group and the other(5.5%, 1/18) was in palatal mucosa-excised group. 6. We excised tumors with submandibular glands in the all cases of submandibular pleomorphic adenoma. There was no specific complication or recurrence in these cases. 7. After excision of the cheek pleomorphic adenomas, we could not see any complication or recurrence.