Subcutaneous cellular neurothekeoma: a pseudosarcomatous tumour

Scar-like lesion on dorsal nose (cellular neurothekeoma)

Neurothekeomas are tumors of neural differentiation and of unknown origin that occur in females at the 2nd and 3rd decades of life. They usually affect the face with an unspecific clinical aspect. The histological features include cellular or mixoid differentiation and immunohistochemistry can be positive for protein s-100, vimentin and epithelilal membrane antigen (EMA). This case report presents a 13-year-old female patient with nasal neurothekeoma of cellular variety and strongly positive for vimentin and s-100; and negative for EMA.

Cellular neurothekeoma in the arm of a child

Soft tissue tumours of the limb in children are uncommon. We report a cellular neurothekeoma, which presented as a hard, irregular tumour in the upper arm of a 7-year-old child. The differential diagnosis of soft tissue tumours in the upper limbs of children is discussed.