Y5 - Lipoma Flashcards
def
a slow growing benign tumour of fatty tissue
do lipomas have well defined or poorly defined edges
well defined by a thin fibrous capsule
where do lipomas occur
in the subcutaneous tissue, commonly in the trunk and proximal limbs
do lipomas have malignant potential
no.
what is a DDx for lipoma
liposarcomas (malignant potential)
epi
common
increases with age
what can causes of lipoma be split into
1 idiopathic
2 genetics
what are common genetic causes of lipomas
familial multiple limatosis Gardners syndrome Madelungs disease Dercums disease MEN1
what is gardners syndrome
variant of FAP
GI polyps, oestomas, lipomas
what is madelungs disease
symmetric lipomatosis with symmetrical growth of lipomas around head, neck, shoulders
associated with alcoholism
what is dercums disease
adiposis dolorosa
middle aged women with painful lipomas on the trunk and limbs
risk factors
familial multiple lipomatosis
gardners syndrome
how large are lipomas
<5cm
how large are liposarcomas
> 5cm
history
commonly a superficial painless mass <5cm which is soft and mobile
what might a solid mass indicate
a liposarcoma
investigations
commonly a clinical diagnosis
investigations are used to exclude malignant mass
1 imaging (MRI or CT)
-well defined, encapsulated homogeneous mass
2 biopsy
when should a mass be imaged
> 3cm
appears deeper than superficial fascia
feels solid rather than smooth
when should a mass be biopsied
mass is growing, symptomatic, solid rather than soft
what is the preferred biopsy
core needle biopsy
