Dermoscopy: Learning From Easy and Difficult Cases

The presentation discusses various cases of pink skin lesions, utilizing dermoscopy to aid in diagnosis. The speaker reviews multiple patient cases beginning with a 39-year-old female presenting with a pearly pink papule, diagnosed as molluscum contagiosum after dermoscopy revealed unique vessel patterns. Another case involves a 66-year-old female with a pink nodule, ultimately diagnosed as basal cell carcinoma (BCC) due to identifiable structures such as blue-grey globules and specific vessel types. The third case focuses on a 55-year-old male with an irregular brownish lesion on his leg, diagnosed as a collision lesion between a clear cell acanthoma and another condition based on the observed vessel distribution. Progressing through additional cases, the speaker highlights an infiltrated squamous cell carcinoma diagnosis in a 58-year-old female and discusses the differences between invasive and non-invasive types. Each case stresses the importance of vascular structures in identifying skin cancers. The final case features a 41-year-old woman with atypical mole syndrome, presenting a pink plaque with some pigmentation, diagnosed as melanoma through careful analysis of the vascular pattern observed. The core takeaway is that pink lesions can be diagnostic challenges due to low pigmentation; hence detailed vascular morphology, distribution, and patterns are critical for accurate diagnosis.