No abstract available.
Neurothekeoma*

No abstract available.
Neurothekeoma* ; Scalp*

Nerve sheath myxoma(NSM) is a rare cutaneous neoplasm of uncertain histogenesis. NSM can be divided into two groups; NSM1 (a myxoid NSM) and NSM2 (a cellular neurothekeoma). NSMs are characterized histologically by well-defined, lobular or plexiform dermal proliferation of stellate, spindle-shaped cells embedded in abundant myxoid stroma. A variable amount of nerve fascicles are entrapped within and around the tumor. Two variants of NSM share the same features to a certain degree but differ in cellularity and mucin deposition. We report two cases of NSMs with different clinical and histopathologic features.
Mucins ; Neurothekeoma*

No abstract available.
Neurothekeoma* ; Scalp

No abstract available.
Eyelids ; Mucocele ; Neurothekeoma

Neurothekeoma is a rare cutaneous neoplasm, occurring as a cutaneous papule or nodule on the face, shoulders, and upper extremities. Neurothekeoma has been subclassified as either the myxoid, cellular, or mixed type, depending on the amount of myxoid matrix and on immunohistochemical analysis. We observed a clinical case with conflicting histopathological and immunohistochemical findings. In this case, microscopic examination showed the typical presentation of myxoid neurothekeoma; however, immunohistochemical staining was negative for S100 protein and positive for CD68, which is the characteristic pattern of cellular neurothekeoma. We report a very rare form of myxoid cellular neurothekeoma of the face in a young woman.
Female ; Humans ; Neurothekeoma* ; Shoulder ; Upper Extremity

Cellular neurothekeoma is a rare, benign, cutaneous neoplasm of uncertain histogenesis and usually presents as a solitary papule or nodule on the head or neck area of children and young adults. Cellular neurothekeoma was thought to represent a cellular variant of nerve sheath myxoma but this neoplasm is histologically different from nerve sheath myxoma. Cellular neurothekeoma is characterized by a fasciculated, somewhat well-circumscribed proliferation of epithelioid and spindle cells. Herein, we report a case of cellular neurothekeoma with a review of related literature.
Child ; Head ; Humans ; Neck ; Neurothekeoma* ; Young Adult

Nerve sheath myxoma or neurothekeoma, a rare cutaneous neoplasm probably originating from the nerve sheath, is classified into three groups as classical, cellular, and mixed types based on cellularity, mucin content and growth patterns. Only two cases of nerve sheath myxoma have been reported in the Korean literatures. We report a case of nerve sheath myxoma occurring on the scalp of a 29 year-old woman. It was identified as the mixed type by histopathological, immunohistochemical and electronmicroscopic findings.
Adult ; Female ; Humans ; Mucins ; Neurothekeoma* ; Scalp ; Talus

Nerve sheath myxoma(NSM) is rare benign neoplasm of the dermis, divided into myxoid, cellular and mixed types. Myxoid NSM is asymptomatic, soft, skin colored or translucent papule or nodule in middle-aged adults and typically located on the face and the upper extremities. We, herein, reported a case of myxoid NSM in a 3 1-year -old male who had a painful, 1 X 1cm sized, dome-shaped nodule on the left sole.
Adult ; Dermis ; Humans ; Male ; Neurothekeoma* ; Skin ; Upper Extremity

We report a case of an uncommon cutaneous neoplasm of nerve sheath myxoma in a 25-year-old woman who had a papule on the left cheek of her face. The histologic findings of the lesion showed that lobulated tumors were composed of spindle shaped and stellate tumor cells in an abundant matrix of mucosubstances. The electron microscopic findings showed numerous cytoplasmic myelin figures, and interdigitating long cytoplasmic processes. 5-100 protein was not discovered and alcian blue and PAS stain showed positive. After surgical excision of tumor, the patient did not have any evidence of disease for one year.
Adult ; Alcian Blue ; Cheek ; Cytoplasm ; Female ; Humans ; Myelin Sheath ; Neurothekeoma*