• 대한세포병리학회지
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• 제16권1호
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• pp.52-56
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• 2005

Fine-needle aspiration cytology (FNAC) has been used extensively in the diagnosis of metastatic malignancies. However, metastatic soft tissue sarcomas are often overlooked, primarily due to the low frequency with/ which they occur. Here, we report a rare case of metastatic rhabdomyosarcoma in both cervical lymph nodes, which was detected by FNAC. A 45-year-old woman presented with anosmia, postnasal drip, and sneezing, symptoms which had persisted for 1 month. The patient was found to have a tumorous lesion at the upper portion of the mid-turbinate, with multiple enlarged cervical lymph nodes, and this lesion was examined closely at our facility. FNA cytology smears obtained from both cervical lymph nodes revealed a high degree of cellularity, and displayed cohesive clusters with gland-like spaces, as well as single isolated cells with abundant karyorrhectic debris. The tumor cells exhibited round to oval nuclei containing fine chromatin, occasional small nucleoli, and scanty cytoplasm, or a total lack of cytoplasm. Some of the tumor cells were arranged in multinucleated forms and abundant dense eosinophilic cytoplasms, reminiscent of a rhabdomyoblast. The histological findings on the lymph nodes revealed an outstanding sinusoidal infiltration and a prominent alveolar growth pattern, interspersed with occasional typical rhabdomyoblasts. The immunohistochemical results [desmin (+), myoglobin (+), myogenin (+), pan CK (-), synaptophysin (-), neuron specific enolase (-)] supported a confirmative diagnosis of alveolar rhabdomyosarcoma. Alveolar rhabdomyosarcoma is a representative sarcoma, which typically manifests with nodal metastasis and carcinoma-like clustering. The cytopathologist should remain alert upon encountering unusual morphology, so that the possibility of this condition, although somewhat remote, should not be dismissed or overlooked.

• Asian Pacific Journal of Cancer Prevention
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• 제16권2호
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• pp.757-760
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• 2015

Aim: To present the epidemiologic data (age, gender, size etc) and histopathologic and immunohistochemical features of cases of rhabdomyosarcoma (RMS) reported in our department. Settings: Section of Histopathology, Department of Pathology and Microbiology, Aga Khan University Hospital, Karachi, Pakistan. Duration: All cases of RMS diagnosed between January 1, 2003 and December 31, 2012 were included in the study. Results: A total of 277 cases were included. Embryonal rhabdomyosarcoma (ERMS) was by far the dominant histologic type (87.4%) followed by alveolar type (ARMS)(9.4%). ERMS was much more common in males (64.0%)and over 65% of cases occurred in the first decade of life (over 90% in the first two decades). Head and neck region was commonest site for ERMS (46.7%), followed by the genitourinary system (16.1%). Over 65% cases of ARMS occurred in the extremities. Over 80% cases of ARMS occurred in the first 3 decades of life. Immunohistochemical staining for Desmin and MyoD1 was positive in 96.7% and 85.4% respectively. Conclusions: The epidemiologic data and microscopic findings in our patients are similar to international published data on rhabdomyosarcoma.

• Tuberculosis and Respiratory Diseases
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• 제40권3호
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• pp.308-313
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• 1993

원발성 늑막횡문근육종은 세계적으로 그 예가 드문 희귀한 질환으로, 저자등은 호흡곤란을 주소로 내원한 15세 남자 환아의 늑막조직검사에서 진단되고, 항암화학요법에 좋은 반응을 보인 원발성 늑막횡문근육종 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• 대한세포병리학회지
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• 제4권1호
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• pp.74-76
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• 1993

저자들은 비교적 접할 기회가 흔치 않은 횡문근육종의 체액 세포학 3예를 경험하였기에 그 임상 소견과 함께 세포학적 소견을 간결히 기술하였다. 제 1예는 흉벽에 다형 횡문근육종이 있는 환자의 늑막 삼출액 소견으로서, 세포들은 느슨한 군집을 형성하거나 개별적으로 흩어져서 도말되었고 핵은 다형성이 심하였으며 다핵을 가지는 세포도 관찰되었고 과염색상을 보였다. 횡문근육종의 특이 소견인 가로무늬는 관찰되지 않았고 세포질은 미세 공포형이었다. 나머지 2예는 구강 원발성 및 원발 병소를 알수 없는 배형 횡문근육종으로서 이들의 늑막 삼출세포학적 소견은 서로 유사하였다. 군집을 형성하거나 개별적으로 흩어진 세포들은 작고 둥근 세포들로서 이들은 미미한 세포질과 과염색상의 핵을 가지고 있었으며 소 세포 암종에서 관찰되는 염주형 배열 또는 주물 현상은 인정되지 않았다. 육종의 체액 세포학은 원발 병소및 아형이 알려진 경우에 진단적이라고 여겨진다.

• Imaging Science in Dentistry
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• 제31권4호
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• pp.241-245
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• 2001

A 16-year-old female was admitted to Wonkwang dental hospital with a chief complaint of painful ulceration on right buccal mucosa around mandibular 3rd molar area. Computed tomography and magnetic resonance imaging showed relative large soft tissue mass on the infratemporal fossa and masseter muscle region. By the feature of T1-weighted and T2-weighted of MR imaging, we suspected this mass as a kind of myogenic sarcoma. Histopathological and immunohistochemical studies established a definitive diagnosis of embryonal rhabdomyosarcoma. A review of the literature was also presented.

• 대한수의학회지
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• 제55권1호
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• pp.71-73
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• 2015

We report a spontaneous embryonal rhabdomyosarcoma in the abdominal cavity of an aged (88-week-old) Sprague-Dawley rat. The animal had a firm lobulated $5{\times}5{\times}4.5cm$ mass in the abdominal cavity that was whitish to tan with necrotic and hemorrhagic plaques. Microscopically, the mass contained nodules with spindle or globoid shaped neoplastic cells with abundant eosinophilic cytoplasm and round or elongated nuclei mixed with other spindle cells with a filamentous appearance and scanty cytoplasm. Multinucleated cells and cross-striations were also observed. The neoplastic cells were positive for vimentin, desmin, and alpha-smooth muscle actin, especially the small spindle cells.

• Journal of Chest Surgery
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• 제46권4호
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• pp.305-308
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• 2013

We report a rare case of rhabdomyosarcoma spontaneously arising in an anterior mediastinal teratoma in a 47-year-old male. The patient was found to have an anterior mediastinal mass on a chest X-ray, which was taken two months before his presentation to Asan Medical Center. A subsequent computed tomography scan revealed an $8.9{\times}7.1{\times}8.0$ cm heterogeneous mass in the anterior mediastinum. He underwent an excision via median sternotomy. The histopathologic study identified a mature teratoma with embryonal rhabdomyosarcoma.

• 대한세포병리학회지
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• 제5권1호
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• pp.71-73
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• 1994

Rhabdomyosarcomas are found mainly in young patients, but rare in adults. A correlated cytological and histologic study of one case of embryonal rhabdomyosarcoma is presented. The cytologic appearance of the urine smear corresponded well with the histologic findings. Cytologically, two main cell types were distinguished ; a predominant primitive, small round cell with scant cytoplasm and a large cell with abundant cytoplasm. The cytologic feature proving rhabdomyoblastic differentiation, such as cross-striation, was absent.

• Imaging Science in Dentistry
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• 제38권4호
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• pp.225-228
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• 2008

Rhabdomyosarcoma (RMS) is an aggressive and fast-growing malignant tumor. RMS predominantly arises in the head and neck of infancy and children. Metastasis is usually via the blood vessel. We report a case of a recurred RMS of the tongue base with the metastasis to multiple lymph nodes in a 37-year-old female. On the follow-up examination using advanced imaging modalities after surgical treatment of RMS, the lymph nodes should be carefully evaluated like in other malignancies, such as a carcinoma, showing frequent lymph node metastasis. (Korean J Oral Maxillofac Radiol 2008; 38 : 225-8)

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1981년도 제15차 학술대회연제순서 및 초록
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• pp.9.3-9
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• 1981

횡문근육종은 간배세포에서 발생한 비교적 드물고 악성도가 극히 높은 종양이다. 환자는 50세 남성으로 약 2개월간의 사성을 주소로 내원하였다. 검사결과 우측 성대의 전 1/3부위에 0.5 cm$\times$0.3cm크기의 종물을 볼 수 있었다. 전신마취하에서 종물을 절제하였으며 생검결과 배상형의 횡문근육종임 이 확진됐다. 저자들이 알기로는 후두부횡문근육종의 증례는 현재까지 전세계적으로 24례의 보고가 있었다. 후두부에서 발생한 횡문근육종의 1례를 문헌적고찰과 함께 보고하는 바이다.