Publications by authors named "Leonard Dzubow"

Background: There is variation in the outcomes reported in clinical studies of basal cell carcinoma. This can prevent effective meta-analyses from answering important clinical questions.

Objective: To identify a recommended minimum set of core outcomes for basal cell carcinoma clinical trials.

View Article and Find Full Text PDF

Importance: Although various treatments have been found in clinical trials to be effective in treating actinic keratosis (AK), researchers often report different outcomes. Heterogeneous outcome reporting precludes the comparison of results across studies and impedes the synthesis of treatment effectiveness in systematic reviews.

Objective: To establish an international core outcome set for all clinical studies on AK treatment using systematic literature review and a Delphi consensus process.

View Article and Find Full Text PDF

Background: Ossifying fibromyxoid tumor of soft parts (OFMT) is a rare mesenchymal neoplasm of intermediate malignant potential. The tumor most commonly occurs on the extremities with a male predominance. We present an unusual case of OFMT occurring as a cystic lesion on the scalp of a female.

View Article and Find Full Text PDF

Background: Reconstructive procedures performed on sebaceous nasal skin are prone to partial flap necrosis, scar spread and inversion, and tissue mismatch. An ideal repair would optimize vascular integrity, minimize closure tension, and use adjacent tissue.

Objective: The purpose of this article is to describe a flap design and dynamics that permit satisfactory reconstruction of small- to medium-sized defects on nasal sebaceous tissue.

View Article and Find Full Text PDF

The Src-activating and signaling molecule (Srcasm) is a recently described activator and substrate of Src-family tyrosine kinases (SFKs). When phosphorylated at specific tyrosines, Srcasm associates with Grb2 and p85, the regulatory subunit of phosphoinositide 3-kinase; however, little is known about the role of Srcasm in cellular signaling. Data presented here demonstrate that epidermal growth factor (EGF) receptor ligands promote the tyrosine phosphorylation of endogenous and adenovirally transduced Srcasm in keratinocytes, and that increased levels of Srcasm activate endogenous SFKs, with a preference for Fyn and Src.

View Article and Find Full Text PDF

Background: Porokeratosis (PK) is a clinically heterogeneous entity associated with sharply demarcated, annular, or serpiginous lesions with a hyperkeratotic ridge. This disorder is associated with aberrant keratinocyte differentiation that histologically manifests as a stack of parakeratin termed the cornoid lamella; this structure represents the peripheral hyperkeratotic ridge of clinical lesions. Histologically, the keratinocytes forming the cornoid lamella demonstrate an altered differentiation program.

View Article and Find Full Text PDF

Background: The repair of nasal tip defects often poses a challenge as many of the commonly used techniques for repair of the distal nose can result in obvious scars, mismatched skin, or distortions of the nasal contour that can compromise the aesthetic outcome.

Objective: Our aim was to create a novel nasal tip flap and examine outcomes of its use.

Methods: The dorsal nasal advancement flap was studied in 30 patients.

View Article and Find Full Text PDF