Epithelioid variant of malignant peripheral nerve sheath tumor (malignant schwannoma) of the urinary bladder

1999 ◽  
Vol 3 (5) ◽  
pp. 304-308 ◽  
Author(s):  
Isam A. Eltoum ◽  
R. Jemison Moore ◽  
William Cook ◽  
D. Ralph Crowe ◽  
William H. Rodgers ◽  
...  
2016 ◽  
Vol 9 (2) ◽  
pp. 170-174
Author(s):  
JoséLuis D'Addino ◽  
Laura Piccoletti ◽  
MaríaMercedes Pigni ◽  
Maria José Rodriguez Arenas de Gordon

The objective of this study is to report a large, rare, and ulcerative infiltrated skin lesion. Its diagnosis, therapeutic management, and progress are described. The patient is a 78-year-old white man, who presented with a 12-month ulcerative perforated lesion that had affected and infiltrated the skin, with easy bleeding. He had a history of hypertension, although controlled, was a 40-year smoker, had chronic atrial fibrillation, diabetes, and microangiopathy. During the consultation, the patient also presented with ocular obstruction due to an inability to open the eye. He mentioned having reduced vision. The computed tomography scan showed upper maxilla osteolysis without eye involvement. We underwent a radical resection in which upper maxilla and the anterior orbital margin were included. We used a Becker-type flap that allowed us to rebuild the cheek and to complete a modified neck dissection. Progress was favorable; the patient recovered ocular motility and his vision improved to 20/200. The final biopsy result was “malignant peripheral nerve sheath tumor, malignant schwannoma.” Malignant schwannoma of the peripheral nerve is extremely rare. The total resection and reconstruction being completed in one surgery represented a challenge due to the difficulty in obtaining tissues in addition to the necessity of an oncological resection.


2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Tomohiro Minagawa ◽  
Ryuta Shioya ◽  
Chigusa Sato ◽  
Ryuji Shichinohe ◽  
Go Yasui ◽  
...  

Malignant peripheral nerve sheath tumor (MPNST) is a rare high-grade soft tissue sarcoma. The epithelioid variant accounts for 5% or less of MPNSTs; the clinical behavior of this variant is unclear. Reports of approximately 40 cases are available in the English literature; however, most reports addressed clinicopathological features rather than therapeutic procedures or clinical courses. We describe a case of a 62-year-old male with an epithelioid MPNST of the left foot. Multiple lung metastases developed after radical surgery on the primary lesion. The response to adjuvant chemotherapy including doxorubicin and ifosfamide was favorable, and thoracoscopic resection was subsequently performed on the remaining three metastases. No evidence of recurrence or metastasis was observed at the 12-month followup after the first operation. Further followup and chemotherapy may be required.


2021 ◽  
Vol 7 (4) ◽  
pp. 145-148
Author(s):  
Alin Istodor ◽  
Ovidiu Ardelean ◽  
Carmen Rădulescu ◽  
Octavian Mazilu

Peripheral nerve sheath tumor (PNST) is known as a benign tumor called Schwannomas, developed from the Schwann cells that produce myelin and collagen, and can occur in a wide variety of locations. In some cases, it can take a malignant turn and grow as a pelvic mass known as malignant peripheral nerve sheath tumor (MPNST), malignant schwannoma, malignant neurofibroma, malignant mesenchynoma and neurogenic sarcoma. Our case report presents a female patient presenting dysuria and pelvic pain. The clinical examination revealed a palpable mass in the lower abdomen. The computer tomography (CT) scan of the abdomen and pelvic region showed a tumor mass that was in contact with the nearby organs, but not infiltrating them. After the surgery, histopathology confirmed the MPNST proliferation. A month after, the patient returned for a follow-up and presenting pelvic pain. The CT scan of the abdomen and pelvic region showed a tumoral mass compressing the nearby organs, but not infiltrating them. The patient was referred to oncology board for palliative treatment. The particularity of this case report is the short period of time recurrence of the MPNST, rather than metastases. The most important treatment for MPNSTs remains surgery, trying to achieve negative margins. However, there have been reported two cases of unresectable MPSNT with partial remission to chemo- and radiotherapy.  


1998 ◽  
Vol 44 (8) ◽  
pp. 691-693
Author(s):  
Makiko HIGASHINAKAGAWA ◽  
Nobuyuki KAMATA ◽  
Yutaka MARUOKA ◽  
Masaji MORI ◽  
Shoji ENOMOTO ◽  
...  

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