Consider Carcinoma Cuniculatum in Recurrent Foot Ulcer: A Case Report and Literature Review.

Carcinoma cuniculatum is a variant of squamous cell carcinoma, characterized by a slow growth with progressive crypt-like invasion of deep tissue. This tumor is frequently misdiagnosed as a benign skin lesion both clinically and histopathologically. The final diagnosis is often delayed as it requires a large sample biopsy.

Tubular biomarkers and histology in lupus nephritis.

Introduction: The relevance of tubulo-interstitial involvement for kidney prognosis has recently been emphasized, but validated biomarkers for predicting histology are still lacking. The aim of our study was to evaluate different serum and urinary markers of tubular damage in patients with lupus nephritis (LN) and to correlate them with kidney histopathology.

Methods: A single-center retrospective study was conducted from January 2016 to December 2021.