Radiation therapy for a woman with vaginal cancer completely resolved co-existing porphyria cutanea tarda (PCT), a form of porphyria that affects the skin, a case study reported.  The case study, “Porphyria cutanea tarda exacerbation as a paraneoplastic syndrome in vaginal cancer resolved with chemoradiation,” was published in the journal Gynecologic Oncology Reports.  PCT is caused by low levels of an enzyme called uroporphyrinogen decarboxylase (UROD), which is essential for the production of heme — a…

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