Extraconal cystic schwannoma mimicking an orbital dermoid cyst

Feijó, Eduardo Damous; Nery, Ana Carla de Souza; Caiado, Fábio Ramos; Prehis, Aline Maria; Limongi, Roberto

doi:10.5935/0004-2749.20160073

Cited by 7 publications

(20 citation statements)

References 8 publications

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“…These tumors can develop from the spinal nerves, representing about one third of all benign spinal tumors, from the cranial nerves, especially the acoustic-vestibular (VIII th ) nerve, which is also the commonest central location of schwannomas [ 14 ], but also in the mandible, from the V th nerve [ 15 ], or in the orbit, from sensory branches of the ophthalmic division of the trigeminal nerve, but also from the II nd , III rd , IV th , and VI th nerves [ 16 , 17 , 18 ]. Rare location of a schwannoma could be the parapharyngeal space, when the tumor origin is the X th nerve, or vagus nerve [ 19 ].…”

Section: ⧉ Discussionmentioning

confidence: 99%

Cystic schwannoma of the distal forearm. Case presentation

Ardeleanu

Pirici²,

Sava³

et al. 2021

Rom J Morphol Embryol

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Schwannomas are well-encapsulated, benign tumors arising from Schwann cell constituting the nerve sheaths. We report a case of a cystic conventional schwannoma, measuring 2.5×3 cm, located in the distal forearm of a 33-year-old female patient with no sign of neurofibromatosis type 2 or type 3. The mass was painless, but Tinel’s sign was positive. Ultrasonography showed a soft tissue cystic mass diagnosed as being synovial cyst in the left distal forearm. Surgical resection was performed without any complications. Histopathological examinations oriented the diagnosis to a schwannoma, but immunohistochemical stainings proved the tumor origin in Schwann cells and made the differential diagnosis with other pathologies, like neurofibroma, leiomyoma, epithelial cyst, synovial cyst, or ganglion cyst.

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Section: ⧉ Discussionmentioning

confidence: 99%

Cystic schwannoma of the distal forearm. Case presentation

Ardeleanu

Pirici²,

Sava³

et al. 2021

Rom J Morphol Embryol

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“…6 There have been reports in the literature where authors have described schwannomas at various sites including few rare ones such as lateral border of tongue, axilla, paravertebral, scalp, vulva, orbit etc. 5,6,[9][10][11][12] Click or tap here to enter text.…”

Section: Discussionmentioning

confidence: 99%

“…Schwannoma is a benign tumor but carries less than 1 percent risk of a malignant transformation. 11 In such tumors long history with microscopic evidence of cellular pleomorphism in a previously diagnosed benign lesion almost always suffice the diagnosis. 16 Schwannoma with ancient changes also presents as a long-standing asymptomatic mass which starts to show symptoms after years.…”

Section: Discussionmentioning

confidence: 99%

Giant schwannoma masquerading as other soft tissue tumors: A series of three cases

Sharma¹,

Sood

2023

IJPO

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Schwannoma is a benign peripheral nerve sheath tumor. It commonly occurs in head and neck region, upper extremities and dorsolumbar spine. The giant schwannoma as such is a rare occurring tumor. We present a series of three cases of giant schwannoma in unusual locations, masquerading as other soft tissue tumors.: Case 1: A 40-year-old male presented with a large exophytic ulcerated growth on his left thigh. The lesion was deep dermal in location. It was well circumscribed, partially encapsulated with extensive areas of hemorrhage and cystic change. Histopathology and immunohistochemistry (IHC) revealed the diagnosis of Benign Schwannoma with ancient changes. A 30-year-old woman presented with mid back ache and a mass in paravertebral location at T8 to T10 levels from last 2 years. The lesion was dermal in location. It was well circumscribed, partially encapsulated with extensive areas of hemorrhage and cystic change. Histopathology and IHC confirmed the diagnosis of Schwannoma with ancient changes. A 24-year-old male, presented with a 6x6 cm lesion over the scalp. It was well circumscribed, partially encapsulated with solid and cystic areas. Histologically, it turned out to be a Schwannoma. Giant schwannoma is a rare tumor which occasionally presents at unusual locations and poses a diagnostic challenge to both, the operating surgeon and the pathologist. These lesions clinically may mimic dermatofibroma, dermatofibrosarcoma and even trichilemmal tumors. These cases are being presented for their unusual presentation.

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“…However, less common appearances are quite nonspecific [14]. A feature specific of this benign neoplasm is that in many cases it displays histologic and imaging features that are commonly seen in higher grade neoplasms and appear incongruous for a slow-growing brain tumor with fairly bland histologic characteristics, such as microvascular proliferation, infiltration of surrounding tissues and structures, intratumoral hemorrhage, intense enhancement on postcontrast images, and leptomeningeal dissemination [15].…”

Section: Discussionmentioning

confidence: 99%

Surgical Management of Pilocytic Astrocytoma of the Optic Nerve: A Case Report and Review of the Literature

Apanisile

Karosi

2017

Case Reports in Oncological Medicine

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Optic nerve astrocytomas (ONAs) are frequent types of optic nerve gliomas (ONGs), which can affect the visual pathway. An 18-year-old male patient was admitted to our department with right-sided intraorbital/retrobulbar swelling, which progressively grew over several months. Clinical examination showed right-sided diplopia, mydriasis, low visual acuity (0.4), exophthalmus (3 cm), epiphora, and severe retrobulbar pain. There was a family history of high-grade (IV) astrocytomas in which two of the family members died due to the disease. Preoperative MRI scan revealed a soft tissue mass around the retrobulbar area of the right eye with intact orbital bony walls. Surgery was performed whereby it was dissected freely from the muscles and was separated from the optic nerve and the globe. Histopathologic analysis confirmed a benign astrocytoma. The follow-up examination revealed no recurrent or residual tumor. A systemic review of the literature indicates that early diagnosis and experienced multidisciplinary management are required in case of unilateral, resectable forms of ONAs with no distant metastasis, in order to provide a long-time survival of patients. Surgical intervention of unilateral ONAs is a relatively safe procedure, allowing complete or partial tumor removal with minimal morbidity and low recurrence rate.

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Extraconal cystic schwannoma mimicking an orbital dermoid cyst

Cited by 7 publications

References 8 publications

Cystic schwannoma of the distal forearm. Case presentation

Cystic schwannoma of the distal forearm. Case presentation

Giant schwannoma masquerading as other soft tissue tumors: A series of three cases

Surgical Management of Pilocytic Astrocytoma of the Optic Nerve: A Case Report and Review of the Literature

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