• Journal of Chest Surgery
• /
• 제21권6호
• /
• pp.1111-1116
• /
• 1988

Neurofibromatosis is very rare syndrome characterized by abnormal cutaneous pigmentation and numerous skin tumors was described by Smith in 1849, which is inherited as an autosomal dominant trait. Von Recklinghausen reported 2 cases of multiple skin and subcutaneous tumors in 1982. Malignant peripheral nerve tumors, although generally rare, are one of the most characteristic malignant tumors associated with Neurofibromatosis. We have experienced 3 cases of malignant Schwannoma in neurofibroma patients from 1982 to 1988 for 6 years at Thoracic and Cardiovascular surgery department, College of Medicine, Yonsei University, Seoul, Korea. l. One is 62 years old female who was taken total hysterectomy followed by irradiation treatment due to Uterine Carcinoma 21 years ago. She had a large bulging mass on left anterior chest wall and was taken enbloc resection of tumor including rib confirmed malignant Schwannoma. 2. Another is 18 years old female who had large bulging mass on right chest wall and pleural effusion in right thoracic cavity. Thoracentesis revealed a large amount of lymphocytes misdiagnosed of Tbc, pleurisy with Neurofibromatosis. We performed tissue biopsy on bulging mass and the specimen was confirmed malignant Schwannoma 2 months after first diagnosis of Tbc. pleurisy. She was not accessible to radical resection because of far advanced malignant Schwannoma at that time. 3. Third case is 28 years old male who was taken enbloc resection of tumor including rib due to Neurofibroma with Neurofibromatosis at M. hospital 6 months ago. But he had rapid growing mass at operation site again and taken tissue biopsy confirmed of malignant Schwannoma. He was not accessible to enbloc resection due to malignant Schwannoma extending to mediastinal structures.

• Toxicological Research
• /
• 제27권3호
• /
• pp.149-152
• /
• 2011

We describe here a multicentric spontaneous malignant schwannoma obtained from one male F344 rat, and this animal was the subject of a carcinogenicity study for which it was treated with diisodecyl phthalate. The animal of the control group not treated with diisodecyl phthalate showed dyspnea and severe lordosis. On the necropsy, two tan, firm, encapsulated masses were observed in the subcutis of the lumbosacral region and the left inguinal region of the abdominal cavity, respectively; the masses were $25{\times}17{\times}8$ mm and $16{\times}14{\times}8$ mm in size, respectively. Histologically, the tumor consisted of spindle and pleomorphic cells that grew in various patterns, that was, sweeping fascicles and herringbone and local organoid patterns. The pleomorphic neoplastic cells had more than two nuclei. Additionally, the diagnosis of malignant schwannoma was confirmed by the immune reactivity of the tumor cells for S-100 protein.

• 대한두경부종양학회지
• /
• 제8권1호
• /
• pp.44-49
• /
• 1992

Malignant schwannoma is a rare tumor arising from the schwann sheath of the nerve fibers. It spreads early to reginal node and metastasis to the lung. Radical surgery have performed for treatment of choice but combined modalities such as radiotherapy or adjuvant chemotherapy have been recommanded recently. The authors experienced two cases of malignant schwannoma originating from the ethmoid sinus and ventricular fold of larynx. and we report these cases briefly.

• Journal of Korean Neurosurgical Society
• /
• 제30권sup2호
• /
• pp.356-360
• /
• 2001

Malignant peripheral nerve sheath tumor(MPNST, primary malignant schwannoma) within the spinal canal is very rare. The prognosis of MPNST in the spinal canal is very poor due to the tendency of perineural spread, dissemination throughout subarachnoid space and local recurrance. This report details the authors' experience on the case of primary malignant spinal schwannoma with review of the literatures and other studies.

• 한국수의병리학회:학술대회논문집
• /
• 한국수의병리학회 2003년도 추계학술대회초록집
• /
• pp.8-8
• /
• 2003

Schwannoma is a neoplasm of the Schwann cells of the neural sheath [1]. Malignant schwannoma is most commonly seen in the subcutis of the flank or neck area near the salivary glands [2]. It also occurs in the thoracic and abdominal cavities, spinal cord, cranial cavity, the heart, etc. Here, we incidentally found a good case of malignant schwannoma in the subcutis of the lumbar and lumbosacral region in male F344 rat during the carcinogenicity study with diisodecyl phthalate (DIDP). Therefore, we tried to report this case as a good reference of malignant schwannoma. (omitted)

• 대한기관식도과학회지
• /
• 제14권2호
• /
• pp.70-72
• /
• 2008

Nerogenic tumor of various histologic types may arise in the posterior mediastinum. Mediastinal schwannoma is a frequent paraspinal neurogenic tumor, but malignant mediastinal schwannoma is rare tumor which is derived from Schwann cells. Although there are some reports dealing with approach for screening patients with symptoms suggesting malignancy and the imaging criteria for distinguishing malignant from benign schwannoma but the results are not clearly defined. We present a case of hugh mediastinal schwannoma which was taken for malignancy in imaging studies because of its invasiveness.

• Journal of Chest Surgery
• /
• 제49권1호
• /
• pp.63-66
• /
• 2016

Neurogenic tumors are the most prevalent tumors of the mediastinum, and schwannomas are the most common type of neurogenic tumor. Primary neurogenic neoplasm of the esophagus is uncommon and malignant schwannoma of the esophagus is extremely rare. We report a case of a 27-year-old female presenting with dysphagia and palpitations who was found to have a lobulated tumor in the mediastinum that was compressing the esophageal lumen. The tumor was successfully treated surgically without recurrence. The final diagnosis, on histopathological examination of the specimen, was malignant schwannoma.

• 대한세포병리학회지
• /
• 제1권2호
• /
• pp.158-163
• /
• 1990

Ancient (degenerated) schwannomas are benign tumors that display pronounced degenerative changes including cyst formation, calcification, hemorrhage, and hyalinization. The tumors are usually infiltrated by large numbers of inflammatory cells such as neutrophils, lymphocytes, siderophages, and histiocytes. They are located in deep locations such as the retroperitoneum and must be differentiated from malignant soft tissue tumors because spindle cells with nuclear atypia may be present. In the fine needle aspiration biopsy. The cytologic findings of two cases of ancient schwannoma occurring in posterior mediastinum and retroperitoneum, respectively, are described. Computerized tomographic findings of both cases showed changes of cystic degeneration or necrosis. A case occurred in retroperitoneum revealed features of destruction of vertebral body to suggest a malignant soft tussue tumor radiologically. The cytologic findings of aspiration biopsy of both tumors revealed that the tumor cells were spindle in shape with elongated nuclei. Some of tumor cells were arranged in a palisading fashion. Cell structures that resemble the Verocay bodies were observed. Some of the tumor cells showed pleomorphic bizarre nuclei, but no mitotic activity or chromatin clumping was seen. Inflammatory cells, siderophages and histiocytes were scattered in fibrillar material. These cytologic findings are important in the diagnosis of ancient schwannoma and in the differentiation of this tumor from the malignant spindle cell tumor.

• Investigative Magnetic Resonance Imaging
• /
• 제15권2호
• /
• pp.170-175
• /
• 2011

고대신경초종(ancient schwannoma)은 신경초종의 변이(variant)로서 천천히 자라나고 퇴행성 변화를 동반한 드문 양성종양으로 알려져 있으며 자기공명영상상 큰 크기와 불균질한 신호강도 때문에 악성 종양으로 오인될 수 있다. 연부조직 종양이 얼기모양(plexiform)을 보일때, 총상신경섬유종, 또는 악성말초신경초종양 등을 감별해야 한다. 이에 저자들은 63세 여자 환자의 왼쪽 넓적다리에 발생한 고대신경초종 1예를 경험하였기에 자기공명영상 소견을 보고하고자 한다. 자기공명영상에서 불균질한 신호강도와 다결절 소견을 보여 총상(plexiform) 악성 말초신경초종양으로 오인하였다.

• Radiation Oncology Journal
• /
• 제10권1호
• /
• pp.77-83
• /
• 1992

악성 신경초종의 두경부 영역에서의 발생은 극히 드물다. 대부분의 종양은 급속도로 커져가는 무통성 종물로서 발견되며, 그 증상은 대개 종물의 국소적 팽윤에 기인한다. 약 반수의 경우에서 본 레클링하우젠씨 병과 동반된다. 광범위한 외과적 절제술이 일반적으로 권장되는 일차 치료법이며, 최근 수술후 방사선치료를 이에 포함시키고 있다. 두경부 영역에서 발생한 악성 신경초종의 예후는 특히 나쁜 것으로 보고되어 왔으나, 최근에는 수술후 방사선 치료를 포함한 적절한 치료를 시행함으로써 생존율의 증가가 가능하게 되었다. 저자들은 사골동과 후두 등 희귀한 위치에 발생한 악성 신경초종 2례를 문헌 고찰과 함께 보고 하는 바이다.