Recording of glass slide dermpath unknown session with the pathology and dermatology residents and fellows from Mayo Clinic in Rochester, Minnesota on 7/20/2021.
Topics discussed (digital slides coming soon):
Papillary endothelial hyperplasia (“Masson tumor”), aka organizing thrombus in a benign vascular malformation 0:30
Tips for Distinguishing Blood vs Fibrin/Thrombus 6:30
Angiokeratoma (verrucous) 14:15 plus lichen sclerosus 17:06
Lymphangioma/Lymphatic Malformation 21:21
Brief Discussion of Post-Radiation Atypical Vascular Lesion (AVL) Mimicking Lymphangioma 27:20 (see also &
Pityriasis Rubra Pilaris (PRP) 29:18
Balloon Cell Nevus (and clear cell differential diagnosis) 38:12
Solar lentigo with sunburn cells with EHK 43:00
Penicillamine (“bramble bush”) vs Pseudoxanthoma Elasticum (PXE) 53:50
A complete organized library of all my videos, digital slides, pics, & sample pathology reports is available here: (dermpath) & (bone/soft tissue sarcoma pathology).
Other useful videos and resources:
Vascular Tumors of the Skin 101:
Hobnail hemangioma (targetoid hemosiderotic hemangioma) video:
Angiosarcoma videos and slides:
-WSI digital slide 1:
-WSI digital slide (CD34 negative!):
-Discussion of pros/cons of CD34 vs CD31 vs ERG in vascular tumors:
Huge pyogenic granuloma (WSI & video):
Melanocytes vs Keratinocytes made easy video:
Epidermolytic hyperkeratosis (EHK) video:
LSA with interstitial granulomatous pattern paper: Elastophagocytosis and interstitial granulomatous infiltrate are more common in extragenital vs genital lichen sclerosus Kendall Fancher MD, Jerad M. Gardner MD, Sara C. Shalin MD, PhD
Please check out my Soft Tissue Pathology & Dermatopathology survival guide textbooks:
This video is geared towards medical students, pathology or dermatology residents, or practicing pathologists or dermatologists. Of course, this video is for educational purposes only and is not formal medical advice or consultation.
Presented by Jerad M. Gardner, MD. Please subscribe to my channel to be notified of new pathology teaching videos.
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