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#Skin squamous cell carcinoma 📌4x less freq cf #BCC but incid rising faster 📌head/neck commonest site 📌risks UV, immunosuppression, radiation, HPV, genetic d., smoking, burns 📌often evolves from precursor (AK) 📌metastasis in 0.5-16% cases (risk correl with grade) #dermpath

Great talk about #molecular #pathology of melanocytic lesions by Nima Ardakani MD at #McKeeDerm. Look how fast & far NGS next gen sequencing has evolved in such short time! #dermpath #dermatology #moldx

Just a few reasons not to punch bx melanocytic lesions, and yet every day.... racgp.org.au/afp/2017/may/s… #dermpath #pathology #dermatology

Communicate surgical intent when sending a skin bx! Great illustration by Nathan Harvey racgp.org.au/afp/2017/may/s… #pathology #dermatology

Separating circumscribed sebaceous neoplasms is not always easy! ncbi.nlm.nih.gov/pubmed/?term=W… #dermpath #pathology #pathboards

Mitoses are not rare in sebaceous adenoma and sebaceoma- they don't make the diagnosis Ca! ncbi.nlm.nih.gov/pubmed/?term=W… #dermpath #pathology

"Dirty" necrotising folliculitis? The answer is (almost) always herpes virus . In this case VZV. #dermpath #pathology #dermatology

IDN and follicular acantholytic dyskeratosis -not warty dyskeratoma (my first thought), known Darier's D! #dermpath #pathology #dermatology

Psoriasis? No, (treated) MF masquerading. Lymphocyte atypia is one clue, clinical is key. #dermpath #pathology #dermatology

A psoriasiform-lichenoid pattern is a clue to MF, syphilis or TNF-i drug reaction. This case is MF. #dermpath #pathology #dermatology

Beta papillomavirus (epidermodysplasia verruciformis-like change). #dermpath #pathology #dermatology

Scabies mite on KOH prep. #dermatology #dermpath #pathology

Scabies KOH prep- 2 eggs with babies inside, one egg shell post hatching. #dermpath #pathology #dermatology

Sebaceous hyperplasia (L) vs Sebaceous adenoma (R). Adenoma has more basal cells. #dermpath #pathology #pathboards

Pilar leiomyoma? Good idea to clinically exclude Reed's syndrome ncbi.nlm.nih.gov/pubmed/28314682 #dermpath #pathology #dermatology

Capsular naevus cell rest- more common in axilla, melanoma pts, high naevus count. #dermpath #pathology #dermatology

Lobular neutrophilic panniculitis: infection, pancreatitis, a1-AT, RA or subcut Sweets. ncbi.nlm.nih.gov/m/pubmed/15858… #dermpath #pathology

You can't immunofinangle a Dx of MF... But if you could, this would be a good example of how to do it! #dermpath #pathology #dermatology

One of my favourite #dermpath clues: hairy palm sign for lichen simplex chronicus. "Acral" changes over a follicle. #pathology #pathboards

Great fun chatting with @MishBridges about links between exercise and mental health....also got to learn how to do squats! Black Dog Institute