localised

PVNS

Definition

 

Pigmented Villo-Nodular Synovitis

- benign inflammatory process that arises in synovial tissues

- contains significant amounts of hemosiderin

 

Epidemiology

 

Age: 20 - 50

Sex: M > F

 

Types

 

A.  Diffuse

- throughout joint synovium

- more difficult to treat / excise fully

 

Neurofibroma

Definition

 

Benign tumour of nerve & sheath tissue

 

Epidemiology

 

Most common benign nerve sheath tumour

- associated with NF 1

- usually arises from small cutaneous nerves

 

Classification

 

1.  Localised

- most common type

- usually solitary (90%) with no genetic association

- nil malignant transormation