Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
MC soft tissue tumor
|
lipoma
|
|
|
lipoma:
-site? |
subcutis of trunk+proximal extremities
(makes sense: you get fat in your trunk [stomach, boobs] + prox ext [thighs]) |
|
|
resembles mature fat?
|
lipoma (vs liposarcoma)
|
|
|
resembles fetal fat?
|
liposarcoma (vs lipoma)
hallmark of liposaracoma= lipoblast (mimics fetal fat cell) |
|
|
reactive pseudo-sarcomatous proliferation
|
nodular fasciiitis
|
|
|
clinnically alarming b/c rapid growth
|
nodular fasciitis (benign0
|
|
|
nodular fasciitis:
sote? |
subcutaneous or intramuscular nodule
-in forearm, chest, back |
|
|
myositis ossificans:
-def? -site? |
ossifying benign fibrous lesion
site=prox ext: intramuscular=pretty unique (muscle="myo"sitis) (or subcutaneous) |
|
|
superficial fibromatoses
|
1.palmar: Dupuytren's contracture
2.plantar 3.penile: Peyronie's Dz |
|
|
deep seated fibromatosis
|
AKA desmoid
extraabdominal: trunk+prox ext abdominal: ant abdom wall after pregnancy intraabdominal: mesentary or pelvis, assoc w/Gardner's syndrome= FAP+desmoid |
|
|
desmoid?
|
=deep seated fibromatosis
(extraabdominal, abdominal, intra-ab) |
|
|
"herringbone pattern"
|
fibrosarcoma
|
|
|
Malignant Fibrous Histiocytoma
|
"Mother Fucking Ho"
-aggressive adult sarcoma, but deceptively circumscribed |
|
|
MC soft tissue sarcoma of childhood and adolescents
|
rhabdomyosarcoma
|
|
|
tadpole cells
|
=rhabdomyoblast
(rhabdomyosarcoma) |
|
|
"strap cells"
|
=rhabdomyoblast
(rhabdomyosarcoma) |
|
|
rhabdomyosarcoma:
types? |
=SkM
1.embryonal=MC age: <10 y/o site: *(face) orbit, nasal cavity, parotid *(groin) prostate, testicle Type: sarcoma botryoides: *grape *Path: cambium layer (submucosal hypercellular zone of tumor cells) 2. alveolar age: adolescents site: deep muscles of extremities |
|
|
grape-like appearance
|
sarcoma botryoides
(type of embryonal rhabdomyosarcoma) |
|
|
submucosal hypercellular zone of tumor cells
|
=cambium layer (seen in sarcoma botryoides, which is a subtype of embryonic rhabdomyosarcoma)
EXAM: prognosis=best for embryonal (vs. alveolar) |
|
|
EXAM-what has better prognosis:
embryonic rhabdomyosarcoma or alveolar? |
embryonic
|
|
|
leiomyoma:
site? |
arise from arrector pili muscle (superficial leiomyomas)
|
|
|
leiomyosarcoma:
site? |
retroperitoneum and extremities: skin and deep soft tissues
|
|
|
synovial sarcoma
|
-near large joints, esp KNEE
-not of synovial cell origin -cytokeratin + types: monophasic spindle cell variant> biphasic (gland like) genetics: t(X:18) |
|
|
cytokeratin +
|
synovial sarcoma
|
|
|
t(X; 18)
|
synovial sarcoma
|
