Below given is a histopathological image of a blood vessel/lymph tumor.Regarding this pathology,which of the following statements is true?
A. Found most often in the dermis of the fingers or toes under a nail
B. Cystic Hygroma
C. Pregnancy Tumor
D. Port wine stain
Ans:A. Found most often in the dermis of the fingers or toes under a nail
Image shows:Glomus tumour. There are blood-filled vascular channels lined by endothelial cells and surrounded by nests and masses of glomus cells.
Glomus Tumour (Glomangioma)
- Glomus tumour is a benign tumour arising from contractile glomus cells that are present in the arteriovenous shunts (Sucquet-Hoyer anastomosis).
- These tumours are found most often in the dermis of the fingers or toes under a nail; other sites are mucosa of the stomach and nasal cavity.
- These lesions are characterised by extreme pain.
- They may be single or multiple, small, often less than 1 cm in diameter, flat or slightly elevated, red-blue, painful nodules.
- Histologically, the tumours are composed of small blood vessels lined by endothelium and surrounded by aggregates, nests and masses of glomus cells.
- The glomus cells are round to cuboidal cells with scanty cytoplasm.
- The intervening connective tissue stroma contains some non-myelinated nerve fibres.