With the rising popularity of tattoos, many physicians have seen complications of their application, usually transient and inflammatory in nature, although both benign and malignant neoplasms have been reported as well. We present an unusual case of a hemangioma arising after tattoo application.

The quality of brazed stainless steel joints depends on the selection of the brazing process, process temperature, filler metal, and the type of protective atmosphere or flux. This article provides a detailed discussion on the applicability and brazeability of stainless steel and lays an emphasis on the selection of suitable filler metal, brazing processes, and its corresponding furnace atmosphere for brazing different grades of stainless steel. The types of brazing processes include torch brazing, furnace brazing in different atmospheres (dissociated ammonia, dry hydrogen, and vacuum atmosphere), dip brazing in salt bath, and high-energy-beam brazing. A complete list of the typical compositions and properties of standard brazing filler metals for brazing stainless steel is also provided.

The cutaneous manifestations of secondary syphilis can vary significantly between patients, leading to a more difficult or delayed diagnosis. Here we present an instructive case of secondary syphilis in a 45-yearold, HIV-positive male patient. He presented with a solitary, crusted anterior neck nodule without concomitant systemic symptoms. Together, history and physical exam were concerning for non-melanoma skin cancer. Histopathologic evaluation of the lesion revealed an extensive infiltrate of plasma cells at the dermoepidermal junction, and immunohistochemical staining revealed numerous Treponema pallidum microorganisms. Physicians must keep syphilis in the differential diagnosis when evaluating atypical nodular lesions resembling non-melanoma skin cancer for the purpose of initiating appropriate antibiotic treatment and preventing future infectious complications.