Xeroderma pigmentosum (XP) is a rare genodermatosis characterized by defective DNA repair, leading to hypersensitivity to ultraviolet (UV) sunlight and predisposes to various cutaneous and non-cutaneous malignancies. Platinum compounds are used against cutaneous cancers as concurrent chemoradiotherapy. But the XP gene polymorphism has a potential role in metabolism of these agents and their susceptibility. Here, we report a case of cutaneous squamous cell carcinoma in a patient with XP who had severe toxicity to chemotherapy. We also discuss other similar cases reported in literature of this entity, to highlight this potentially lethal pharmacogenomic association.

Paraneoplastic neurologic syndromes (PNS) are rare in pediatrics and are understood to be consequences of cross-reactivity against various neuroendocrine antigens expressed on cancer cells. Here, we report a case of autoimmune encephalitis, a type of paraneoplastic neurologic syndrome that was associated with a case of adrenocortical carcinoma and had some clinical response to immunosuppressive therapy. Adrenocortical carcinoma is a rare tumor with controversial tissue of origin but expresses various neuroendocrine antigens that could be the possible mechanism for this rare yet interesting association.