Neglected Giant Schwannoma of the Sciatic Nerve – A Case Report (original) (raw)
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A rare cause of sciatica: Sciatic nerve schwannoma
SICOT-J
The authors report one case of schwannoma located in the sciatic nerve, just above the popliteal fossa. A sciatic localization is rare, observed in 1% of the patients. The misleading clinical presentation of this localization causes a delay in diagnosis. Magnetic Resonance Imaging (MRI) is the imaging modality of choice, but the final diagnosis is made by the histological examination of the tumor. Schwannoma should be surgically removed without division of the nerve trunk.
Sciatica due to Schwannoma at the Sciatic Notch
Case Reports in Orthopedics, 2013
Schwannomas are rarely seen on the sciatic nerve and can cause sciatica. In this case report we aimed to present an unusual location of schwannoma along sciatic nerve that causes sciatica. A 60-years-old-man was admitted to us with complaints of pain on his thigh and paresthesia on his foot. Radiography of the patient revealed a solitary lesion on the sciatic nerve. The lesion was excised and the symptoms resolved after surgery.
Majalah Kedokteran Bandung
Schwannoma are benign peripheral nerve tumors derived from the Schwann cells in the neural sheath. Sciatic nerve schwannoma in the lower extremity is uncommon, accounting for only 1% of all schwannoma cases. This report aimed to describe the functional recovery after lower limb surgery of sciatic nerve schwannoma with peripheral nerve block and without intraoperative neurophysiological monitoring (IOM) performed in Semen Padang Hospital in 2019. A 78-year-old woman presented with a complaint of pain on her slowly growing mass at the right popliteal region, which had existed for 22 years. Microsurgical resection was performed with local peripheral nerve block and without intraoperative neurophysiological monitoring. Tumor was removed en-bloc by sharp dissection using a microscope without any complication. The patient had significant pain relief without any neurologic deficit three weeks after the surgery.
Ultrasound Imaging for a Rare Cause of Sciatica: A Schwannoma of the Sciatic Nerve
Cureus, 2020
Sciatica is a common musculoskeletal complaint, but it is rarely attributed to peripheral nerve tumors. Until now, there is little literature reporting sciatica caused by a sciatic schwannoma at the proximal thigh. A 27year-old male had left posterior proximal thigh pain for more than two years. Compression of the tender point caused numbness radiating to his low back, buttock and leg regions. Due to poor response to conservative treatments, he was referred for an ultrasound examination, which revealed a solid mass on the track of the sciatic nerve. The subsequent magnetic resonance imaging showed a well-defined tumor sized 2.3 × 1.8 × 2.3 cm beside the sciatic nerve, and a schwannoma was confirmed by postsurgical pathology. In conclusion, ultrasound is helpful in differentiating between the various causes of posterior thigh pain, which, in this case, facilitated detection of a sciatic nerve schwannoma and subsequent surgical removal.
Sciatic Schwannoma-Rare Cause of Sciatica: A Case Report
Annals of Clinical and Analytical Medicine, 2015
Schwannoma periferik sinirlerin en sık görülen tümörlerindendir. Bu olgu sunumunda non-diskojenik siyatalji semptomlarına neden olan ve cerrahi tedavi uygulanan siyatik sinirde schwannoma tartışıldı.
Case Report of Schwannomas: Benign Tumour of the Peripheral Nerve Sheath
EMJ Neurology, 2020
Schwannomas, also known as neurilemmomas, are benign peripheral nerve sheath tumours arising from the Schwann cells surrounding the nerve. Incidence of peripheral nerve sheath benign tumours occurring in the lower extremities is rare (1–10%). The authors present two cases with solitary schwannomas from the peripheral nerves. In one case, the schwannoma arose from the sural nerve and in the other, from the tibial nerve. They were successfully surgically removed with the aid of a surgical microscope, with no intraoperative or postoperative complications.
Schwannoma of the Lower Leg with Malignant Transformation. A Case Report
European Journal of Case Reports in Internal Medicine, 2015
Background: Peripheral nerve sheath tumors are benign or malignant. Schwannoma is a benign peripheral nerve sheath tumor originating from the Schwann cells that slowly grows eccentric to the nerve axis. Malignant transformation of a schwannoma is rare. Case presentation: A 73 years old women that presented in our medical service for other medical problems was diagnosed with a tumor of the lower leg (a small mass neglected by the patient for about 10 years). Considering the ultrasound features of the tumor, it was suspected to be a schwannoma. The tumor was resected and the histopathological assessment revealed a schwannoma with areas of malignant peripheral nerve sheath tumor transformation. LEARNING POINTS • Malignant transformation of the schwannomas is rare but should be considered given its poor prognosis. • We should distinguish between "ancient schwannoma" and malignant transformation of schwannoma since treatment and prognosis vary. • Imaging is not entirely reliable in differentiating benign from malignant peripheral nerve tumors.
Sural Nerve Schwannoma: A Case Report and Review of the Literature
2021
Peripheral nerve sheet tumors (PNSTs) are exceedingly rare with the most tumors being benign. Schwannomas are one of the two types of PNSTs and have been classified as a slow-growing, benign neurogenic tumor composed of Schwann cells. Schwannomas have been shown to occur primarily in middle-aged patients with no gender prevalence. The variable clinical presentation of this tumor makes it a difficult diagnosis with symptoms being based on their location. Magnetic resonance imaging (MRI) is used to reveals the location, size, texture, and relationships with surrounding neuromuscular structures, with surgical excision being the primary treatment option with excellent outcomes. Our patient presented to the clinic due to left leg pain. MRI was utilized to diagnosis the tumor was a sural nerve tumor. The tumor was tan-pink in color and measured 6 cm in length and ranging from 0.4 cm to a central bulging aspect up to 2.5 cm for 3 cm with positive markers for S100. This case report explores...
Peripheral Nerve Schwannoma: A Review of Varying Clinical Presentations and Imaging Findings
The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons
A schwannoma or neurilemmoma is a benign, isolated, noninvasive, and encapsulated tumor originating from Schwann cells of the peripheral nerve sheath. The incidence of a schwannoma occurring in the foot and ankle is rare, with prevalence rate of 1% to 10%. Schwannomas have no sex predilection, and they commonly occur in patients in their fourth decade. Malignant transformation of benign schwannoma is unusual; however, it is important to note that malignant variants of schwannomas do exist and account for about 5% to 10% of all soft tissue sarcomas. We present 3 cases of benign schwannoma in the lower extremity. All 3 patients presented with varying clinical symptoms, including pain, paresthesia, weakness, and a palpable mass. A schwannoma was eventually diagnosed in all 3 patients. We discuss and review the known entities of peripheral nerve schwannoma and describe the clinical and imaging findings and therapeutic strategies for treating and diagnosing peripheral nerve schwannoma.
Giant Schwannoma of the Median Nerve: A Case Report and Literature Review
Asian Journal of Oncology
Peripheral nerve sheath tumors (PNST) develop sporadically or are associated with genetic disorders and affect individuals mainly between the third and sixth decades of life. PNST affect one or multiple fascicles. The benign ones have slow and painless growth, preceding in years the diagnosis. Diagnosis is often confused with other soft tissue tumors, such as fibroids and lipomas. We present a rare case of giant schwannoma of the median nerve. The patient had a progressive local growth with minimal neurological impairment.