Publications by authors named "P Zaballos"
[Translated article] Dermoscopy of Squamous Cell Carcinoma: From Actinic Keratosis to Invasive Forms.
Actas Dermosifiliogr
October 2024
Article Synopsis
- The dermoscopy of squamous cell carcinoma (SCC) helps differentiate between types based on keratin, vascular, and pigment features.
- Non-pigmented actinic keratoses have a "strawberry pattern," while pigmented actinic keratosis shows similarities to lentigo maligna but can be distinguished by specific signs like pigmented scales and erythema.
- Dermoscopy is crucial for early detection of invasive SCC, with its presentation varying by tumor differentiation—keratin features in well-differentiated tumors and atypical vascular patterns in poorly differentiated ones.
Dermoscopy of Squamous Cell Carcinoma: From Actinic Keratosis to Invasive Forms.
Actas Dermosifiliogr
October 2024
When performing the dermoscopy of squamous cell carcinoma and its precursors we differentiate among keratin-related, vascular, and pigment-related criteria. Non-pigmented actinic keratoses are characterized by the "strawberry pattern". Pigmented actinic keratosis shows a significant dermatoscopic overlap with lentigo maligna, but the presence of pigmented scales, erythema, and prominent follicles favors its diagnosis.
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- The study focused on the characteristics and dermatoscopic features of cutaneous metastases (CMs) from various primary tumors, highlighting the challenge of diagnosing them.
- A total of 583 patients were analyzed, with melanomas being the most common primary tumors, and a significant portion of the metastases was found in the head and neck region.
- The findings suggest that pigmented melanoma metastases often appear as structureless blue lesions, while amelanotic metastases display linear serpentine vessels; both types can be confused with other skin lesions.
Article Synopsis
- Dermoscopy is an important noninvasive technique that helps in the diagnosis of melanoma and can aid in assessing its thickness before surgery.
- This study examined the relationship between blood vessel morphology in primary melanomas and factors like the Breslow index (a measure of melanoma thickness) and ulceration.
- Results indicated that certain types of blood vessels are linked to thicker melanomas and that specific vessel types may indicate ulceration or dermoscopic regression, though the study faced challenges with case selection and identifying vessels in pigmented melanomas.
Dermoscopy of haemosiderotic/aneurysmal dermatofibroma: A morphological study of 110 cases.
J Eur Acad Dermatol Venereol
February 2023
Background: Haemosiderotic and aneurysmal dermatofibromas are uncommon and frequently misdiagnosed lesions, which can be considered as different histopathological stages of the same tumour. A dermoscopic diagnosis testing accuracy has not been performed for these tumours to date.
Objectives: To determine the diagnostic significance of dermoscopic structures and patterns associated with haemosiderotic/ aneurysmal dermatofibromas in a large series.