Basal cell carcinoma-associated paratumoral follicular and epidermal hyperplasia.

Reactive epithelial hyperplasia is a well-known phenomenon which occurs adjacent to certain neoplasms such as cutaneous fibrous histiocytoma, granular cell tumor, Spitz nevus, and melanoma. We report 46 cases of paratumoral follicular and epidermal hyperplasia associated with basal cell carcinoma (BCC). This reactive process associated with BCC has certain characteristic features.

Reticulated acanthoma with sebaceous differentiation. Lack of association with Muir-Torre syndrome.

We hereby report a case of a reticulated acanthoma with sebaceous differentiation (RASD), a rare and often mislabeled benign lesion that is characterized by epidermal acanthosis and clusters of sebocytes in a reticulated seborrheic keratosis-like pattern. The presence of multiple sebaceous tumors, most notably cystic sebaceous adenomas and keratoacanthomas, has been associated with Muir-Torre syndrome (MTS). Although very rare, cases of RASD have been reported with MTS, which potentially offers profound clinical significance to this neoplasm.

Inflammatory pseudotumor of the cervix.

Inflammatory pseudotumor is a tumoral non-neoplastic lesion of unknown etiology that has been described in several locations. We report the histopathological and immunohistochemical findings of this lesion in the cervix of a 58-year-old woman whose main complaint was pelvic pain.

Mucinous syringometaplasia. A case report with review of the literature.

We describe a case of mucinous syringometaplasia in a 53-year-old man. The lesion was located on a previously unreported site, the shaft of the penis. Histologically the lesion contained bland mucinous cells in acrosyringia that extended to the adjacent epidermis.