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Median nerve schwannoma: A case and review of literature.

Padasali PS, Shankaregowda VS, Kshirsagar SD - Asian J Neurosurg (2015 Jul-Sep)

Bottom Line: Symptoms are caused by an entrapment syndrome resulting from the growing tumor.These characteristics include mobility, Tinel's sign, S-100 histological staining, and Antoni patterns.With a correct diagnosis, the tumor can be extirpated with preservation of nerve function and a low risk of recurrence.

View Article: PubMed Central - PubMed

Affiliation: Department of Surgery, Sapthagiri Institute of Medical Sciences, Bengaluru, Karnataka, India.

ABSTRACT
We report a case of a median nerve schwannoma, a rare type of a benign tumor of Schwann cells that presents as a palpable and painful mass on the flexor aspect of the forearm. Schwannomas of the median nerve make up 0.1-0.3% of all hand tumors. Symptoms are caused by an entrapment syndrome resulting from the growing tumor. Pain is the most common complaint of schwannomas. Imaging studies include computed tomography and magnetic resonance imaging and ultrasound. It is difficult to differentiate schwanommas from neurofibromas solely on the basis of a radiological investigation. Tumors of the median nerve are diagnostically challenging and median nerve schwannomas are rare. Diagnostic pearls are described to facilitate a more accurate and timely diagnosis. These characteristics include mobility, Tinel's sign, S-100 histological staining, and Antoni patterns. With a correct diagnosis, the tumor can be extirpated with preservation of nerve function and a low risk of recurrence.

No MeSH data available.


Related in: MedlinePlus

Encapsulated schwannoma specimen
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Figure 4: Encapsulated schwannoma specimen

Mentions: A longitudinal incision centered over the tumor bulk at the distal part of flexor aspect of forearm was performed [Figure 1]. The tumor was situated below the flexor tendon of forearm. The tumor had an eccentric position and was firmly attached to the median nerve. The decision to preserve the median nerve and perform a marginal tumor excision was undertaken. The epineurium was longitudinally incised and the soft tumor mass dissected from surrounding nerve fascicles [Figures 2 and 3]. The mass was encapsulated and removed totally [Figure 4]. Immediately postoperatively the patient not experienced any sensory loss and weakness of the muscles innervated by the median nerve.


Median nerve schwannoma: A case and review of literature.

Padasali PS, Shankaregowda VS, Kshirsagar SD - Asian J Neurosurg (2015 Jul-Sep)

Encapsulated schwannoma specimen
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4553734&req=5

Figure 4: Encapsulated schwannoma specimen
Mentions: A longitudinal incision centered over the tumor bulk at the distal part of flexor aspect of forearm was performed [Figure 1]. The tumor was situated below the flexor tendon of forearm. The tumor had an eccentric position and was firmly attached to the median nerve. The decision to preserve the median nerve and perform a marginal tumor excision was undertaken. The epineurium was longitudinally incised and the soft tumor mass dissected from surrounding nerve fascicles [Figures 2 and 3]. The mass was encapsulated and removed totally [Figure 4]. Immediately postoperatively the patient not experienced any sensory loss and weakness of the muscles innervated by the median nerve.

Bottom Line: Symptoms are caused by an entrapment syndrome resulting from the growing tumor.These characteristics include mobility, Tinel's sign, S-100 histological staining, and Antoni patterns.With a correct diagnosis, the tumor can be extirpated with preservation of nerve function and a low risk of recurrence.

View Article: PubMed Central - PubMed

Affiliation: Department of Surgery, Sapthagiri Institute of Medical Sciences, Bengaluru, Karnataka, India.

ABSTRACT
We report a case of a median nerve schwannoma, a rare type of a benign tumor of Schwann cells that presents as a palpable and painful mass on the flexor aspect of the forearm. Schwannomas of the median nerve make up 0.1-0.3% of all hand tumors. Symptoms are caused by an entrapment syndrome resulting from the growing tumor. Pain is the most common complaint of schwannomas. Imaging studies include computed tomography and magnetic resonance imaging and ultrasound. It is difficult to differentiate schwanommas from neurofibromas solely on the basis of a radiological investigation. Tumors of the median nerve are diagnostically challenging and median nerve schwannomas are rare. Diagnostic pearls are described to facilitate a more accurate and timely diagnosis. These characteristics include mobility, Tinel's sign, S-100 histological staining, and Antoni patterns. With a correct diagnosis, the tumor can be extirpated with preservation of nerve function and a low risk of recurrence.

No MeSH data available.


Related in: MedlinePlus