Skin dataset Flashcards
1
Q
BCC/SCC cut up
A
Measure specimen Measure lesion + margins Ink margin slice it transversely Describe cut surface <10mm embed all >10mm then margin
2
Q
BCC core data
A
Growth pattern - low (nodular, superficial), high (micronodular, infiltrative, basosquamous) Level of invasion perineural and LVSI Margins (high risk = <1mm) Stage
3
Q
Staging Skin cancer (exclude Merkel cell)
A
pT1 <20mm pT2 <40mm pT3 >40mm or depth 6mm pT4a cortical/marrow invasion pT4b axialy skeleton/skull base/foraminal invasion
N1 ipsilateral LN <30mm
N2 ipsilateral LNs <30 or LN <60mm
N3 ipsilateral LN >60mm0
in H+N further divided into: N2a single ipsilateral LN <60mm N2b multiple ipsilateral LNs <60mm N2c bilateral LNs <60mm N3a LN >60mm N3b LN with EXTRANODAL spread
4
Q
Lymphadenectomy
A
Find LNs
Max diameter of largest metastasis
5
Q
SCC subtype
A
high risk - acantholytic, desmoplastic, spindle cell adenosquamous SCC with adjacent Bowens Poorly differentiated Perineural + LVSI Clark 5
6
Q
Malignant melanoma
A
Measure specimen Measure lesion + margins Ink margin slice it transversely Describe cut surface embed all
7
Q
Malignant melanoma - micro
A
Subtype - superficial spreading, nodular Breslow thickness (two decimal places) ulceration Dermal mitotic index (per mm2) LVSI microsatellite perineural/neurotropism growth phase - radial vs vertical (>1 suitably sized cluster) Tumour infiltrating lymphocytes Regression Clark level Margins
8
Q
TNM MM
A
T1a <0.8mm (Breslow thickness) T1b <1mm T2a <2mm without ulcer T2b <2mm with ulcer T3a <4mm without ulcer T3b <4mm with ulcer T4a >4mm without ulcer T4b >4mm with ulcer
