electriccobra76
Member
16 messages
joined Jul 2011
Dermoscopy =
Dermoscopy and skin pigment changes
When you're looking at pigment changes on the skin, doctors use this "two-step" method algorithm. First off, they split everything up into melanocytic or non-melanocytic changes.
The second step of this "two-step" thing is where they actually try to tell if a spot is just a mole or straight-up melanoma. If a spot doesn't fit into either category? It gets labeled "unclassified," and then they watch it like a hawk specifically to catch any melanoma.
After that, the whole analysis moves into using specific dermoscopy algorithms. You've got the classic shape analysis, but there are other ways to play it—like the ABCD rule, the Menzies method, or those "7-point" and "3-point" checklists.
Pattern analysis is pretty much the big one everyone knows. It basically mashes together different subjective and objective morphological shapes all at once.
There are also these simplified versions of the algorithms, and honestly, they're about as sensitive as each other. But if you want specificity, the ABCD rule beats out the "7-point" one.
Then there’s the "3-point" algorithm, which is used to hunt for melanoma or non-melanoma tumors and decide if they need to be cut out.
Look, the whole point of dermoscopy today is catching melanoma early. Is it perfect? No way. It’s not 100% accurate. If a melanoma is hard to spot through a dermoscope, it’s going to be a nightmare to diagnose clinically too. That’s why tracking spots that aren't super suspicious yet—either clinically or via dermoscopy—is absolutely vital for catching things before they get bad.
People who are high risk—I'm talking people with tons of moles, dysplastic nevus syndrome, Type I or II skin, or a family history of melanoma—they need both clinical and dermoscopic monitoring. No excuses.
Basically, there are two main ways to do dermoscopic monitoring:
"Long-term monitoring" means comparing digital, clinical, and dermoscopic photos during
a check-up every 6 to 12 months. This is usually for patients swimming in atypical moles.
"Short-term monitoring" is when you compare those same types of photos during
a check-up every 3 months for suspicious spots that don't quite scream "melanoma" yet.
And don't forget "non-selective dermoscopy." It's huge. You shouldn't just focus on the big, dark pigmented spots. You've gotta dermoscope and track the tiny ones and even the non-pigmented changes too.