In this section we have Logan's cases since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.

Haemangioma, poikilodermatous, plaque-like

By Operations Pathhub

August 14

Followers 0

Case 2846 3.6.21 (S. Taibjee) M 93 4x3 cm purple plaque, right lower leg

I thought this was venous hypertension, but was iunaware of this entity. Diffuse, rather evenly arranged band-like capillary proliferation in somewhat hyaline, sclerotic dermis, without lobular pattern. Endothelial cells prominent, occasionally hobnail. Overlying hyperkeratosis.

Ref: https://www.jaad.org/article/S0190-9622(19)30513-4/pdf

Semkova K et al JAAD 2019 81(6): 1257-1270

Case 2912 3.9.21 (R. Carr) M 75 lower leg ? BCC

Superficial, multifocal BCC. Background changes of lichenification, reactive microvenular proliferation and loss of elastic fibres in dermis (shown by EVG). RC thinks this is a reaction pattern to varied insults such as pressure over bony prominences, after lichenoid infiltration and here in response to superficial BCC.