Multiple Xanthogranulomas in a Teenager.

Juvenile xanthogranuloma (JXG) is a non-Langerhans cell histiocytosis that typically presents as a solitary lesion in infancy. Multiple lesions, especially in patients over one year of age, are rarely described in the literature. The authors report a case of a 17-year-old female who presented with multiple asymptomatic nodules and plaques.

Cystic fibrosis transmembrane conductance regulator is helpful in the distinction of extra-mammary Paget's disease from squamous cell carcinoma in situ (Bowen's disease).

Cystic fibrosis transmembrane conductance regulator (CFTR) represents a cAMP-dependent channel found in normal apocrine glands. The classification and histogenesis of extra-mammary Paget's disease (EMPD) remains controversial, but it is generally accepted that primary EMPD exhibits apocrine differentiation. Therefore, we examined the utility of CFTR in the differential diagnosis of EMPD and squamous cell carcinoma in situ (SCCIS).

Oncogenic osteomalacia of the cervical spine: a rare case of curative resection and reconstruction.

Oncogenic osteomalacia (OO) is a rare paraneoplastic syndrome, with only 100 reported cases in the literature. The majority of OO-associated mesenchymal tumors are due to a lesion called phosphaturic mesenchymal tumor, mixed connective tissue (PMTMCT) variant. There have been only 6 reported cases of OO of the spine.