Two extreme conditions of xeroderma pigmentosum.

Two atypical cases of xeroderma pigmentosum are reported. One of these cases with lung metastasis of squamous cell carcinoma in the first decade of life and the other with late onset disease (XP) in fifth decade of life. Lung metastasis of squamous cell carcinoma in first decade of life in patients with xeroderma pigmentosum has never been reported in the literature to our knowledge. Late onset of the disease in fifth decade is also a rare condition. Clinicians should be more alert for the internal organ metastases to improve the survival of the patients and should never forget that xeroderma pigmentosum has got a wide range of clinical presentation.