Pseudolymphomatous cutaneous angiosarcoma: a report of 2 new cases arising in an unusual setting.

Pseudolymphomatous cutaneous angiosarcoma represents a rare, relatively new variant of cutaneous angiosarcoma exhibiting a prominent inflammatory lymphoid infiltrate that can mask the underlying vascular malignant proliferation and mimic a lymphomatous or pseudolymphomatous process. We describe the clinicopathologic characteristics of two new cases of pseudolymphomatous cutaneous angiosarcoma whose originality lies in the unusual setting from which they have arisen. In fact, the first case was an exceedingly lymphocyte-rich recurrence of a typical epithelioid cutaneous angiosarcoma whose primary lesion that was almost devoid of inflammatory infiltrate underwent surgical excision and radiotherapy while the second one was an unexpected histopathological finding associated with a basal cell carcinoma.

Diagnostic evaluation of papillary lesions of the breast on core biopsy.

The management of asymptomatic intraductal papillary lesions of the breast diagnosed on core biopsy poses a challenge for patients and clinicians, as the distinction between common benign lesions and atypical or malignant varieties may be difficult without formal excision. The aim of this study was to determine whether a combination of histopathologic and biomarker features could be used to accurately identify benign papillary lesions on core biopsy. An inclusive group of 127 excised papillary lesions was characterized by detailed histopathologic review and immunohistochemical staining for the basal markers cytokeratin 5/6 (CK5/6) and P63 and the proliferation marker Ki67.