Morphology Quiz
Dermatology is full of new terminology that you really will use over the course of your medical career so there's no time like now to start learning it. Also, just think of how well this stuff lends itself to multiple choice questions! This quiz will take you through most of the terminology described in Dr. MacSween's "Morphologic Manifestations of Cutaneous Disease" and my lecture "Assessment of Patients with a Skin Disorder". You can also find descriptions and lots more pictures of all the different lesions in Chapter 1 of Clinical Dermatology by T.P.Habif. Have fun!
"A" is a large (3 cm), slight elevated erythematous __________:
Patch | |
Plaque | |
Nodule | |
Papule |
The secondary skin lesion (“B”) on top of this erythematous plaque is:
Crust | |
Lichenification | |
Excoriation | |
Scale |
This large flat hyperpigmented lesion is an example of a:
Macule | |
Plaque | |
Patch | |
Bulla |
This small fluid-filled lesion on an erythematous base is a __________:
Bulla | |
Vesicle | |
Papule | |
Macule |
A and B are both small but A is raised and B is flat. Neither are deep. They are respectively a:
Papule and Macule
| |
Plaque and patch | |
Nodule and macule | |
Papule and vesicle
|
What is the shape of this 3 cm lesion (which because it is large, elevated and not deep is a plaque, quite different from the plaque in slide one but still a plaque. If it were deep as well it would be a tumour. )
Fimbriated
| |
Annular | |
Dome shaped | |
Umbilicated |
This is a raised itchy large lesion that when you came back in the room from looking it up was GONE! It is a:
Hive
| |
Wheal
| |
Urticaria
| |
Plaque
|
Using the TSAD approach I would describe this as: numerous grouped (i.e. the arrangement) _____ (A= the primary lesion), some with ______(B= the secondary lesion) on a sharply demarcated erythematous base (type), on the extensor surface of the upper arm, crossing over to the flexor surface of the lower arm (the distribution). (The shape of the individual lesions do not particularly help with the description or aid in the diagnosis so is omitted). (FYI: It is a contact dermatitis due to a chemical burn.)
Vesicles, scale
| |
Vesicles, crust | |
Bullae, scale | |
Bullae, crust |
What is the arrangement of this contact poison ivy?
Serpiginous | |
Clustered | |
Linear | |
Halo or bull’s eye or targetoid |
The little blood vessels on her upper legs are_____? (The big ones are varicose veins).
Telangectasia
| |
Comedones | |
Burrows | |
Petechiae
|
What is the name of the small collections of blood in this person's skin?
Purpura
| |
Petechiae
| |
Plaque
| |
Vesicles
|
The slide you’ve been waiting for and don’t deny it! This fellow has an itchy heel which he keeps rubbing. This has caused the skin to thicken and the skin lines to accentuate. This is a secondary skin lesion. It is ______:
Excoriation
| |
A scar | |
Atrophy | |
Lichenification |
Both of these have occurred at an injury site. A is a thickened heaped up lesion whereas if you palpate B it feels thin, slightly indented and there is an absence of skin lines. What are they respectively?:
Keloid and atrophy | |
Scar and atrophy | |
Scar and lichenification | |
Keloid and lichenification |
Question 14
For a fabulous prize, email me (kws@queensu.ca) what you think the complete TSAD description of this would be. Bonus points if you get the diagnosis. (OK I’m just kidding about the fabulous prize but think of the satisfaction if you get it right!!)