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Table 2 Summary of characteristic imaging findings of malignant skin tumors

From: Imaging findings of malignant skin tumors: radiological–pathological correlation

Characteristic imaging finding

Malignant skin tumor

Calcification

PTT, cBCC

Configuration

Flat elevated lesion

cSCC, cMM, cAS

Widespread

EMPD, cAS

Multiple skin lesions

MCC, cAS, Cutaneous lymphoma

Pedunculated

Porocarcinoma

Intratumoral signal

Homogenous signal on T2WI

cBCC, Porocarcinoma, Cutaneous lymphoma

Intratumoral hyperintensity on T1WI

cMM, Porocarcinoma

Intratumoral hypointensity on T2WI

PTT, cAS

Intratumoral cystic foci on T2WI

cBCC, Porocarcinoma

Hemorrhage

cAS

Cystic lesion with mural nodule or wall thickening

Hidradenocarcinoma, cSCC in the epidermoid cyst

  1. PTT = proliferating trichilemmal tumor, cBCC = cutaneous basal cell carcinoma, cutaneous squamous cell carcinoma, cMM = cutaneous malignant melanoma, cAS = cutaneous angiosarcoma, EMPD = extramammaly Paget disease, MCC = Merkel cell carcinoma