Related Experiment Video
Updated: Feb 12, 2026

A Colorimetric Assay that Specifically Measures Granzyme B Proteolytic Activity: Hydrolysis of Boc-Ala-Ala-Asp-S-Bzl
Published on: November 28, 2014
ALA-PDT as palliative care in a patient with secondary perineum EMPD
Shuzhan Shen1, Guolong Zhang1, Peiru Wang1
1Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China.
Abstract:
Extramammary Paget's disease (EMPD) is a rare intraepithelial neoplasm arising in apocrine rich area of the skin. It is divided into primary and secondary EMPD based on whether there is an underlying malignancy, either local apocrine cancers or distant neoplasms. Therefore, all patients with EMPD should undergo an extensive and targeted cancer workup, depending on the histological staining pattern and the location. Surgical removal is considered the mainstay of treatment for patients with EMPD. Herein, we present a case of secondary EMPD where photodynamic therapy was effective in terms of improving symptoms and quality of life. Owing to preexisting comorbid conditions, large area of disease and risk of post-surgery mutilation and functional impairment, surgery could not be elected for this patient, necessitating nonsurgical approach.
Related Concept Videos
Patient-centered Care
Muscles of the Pelvic Floor and Perineum
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
Secondary Active Transport
Secondary Active Transport
Secondary Healthcare System
Primary and Secondary Growth in Roots and Shoots

