Sarcoidosis appearing initially as polymyositis

Polymyositis is an idiopathic progressive muscle disease. Occasionally, sarcoidosis can be associated with a polymyositis-like picture, both clinically and on laboratory investigation. However, serial sections of muscle biopsies will usually demonstrate sarcoid granulomas. A case of sarcoidosis that began as polymyositis with diffuse interstitial pneumonitis is presented.     

Pseudolymphoma occurring in a tattoo

Pseudolymphomas are reactive inflammatory disorders due to different causative agents. Only a few cases of pseudolymphomas resulting from a tattoo have been described in the literature. We describe a 34-year-old woman with a nodular infiltrate limited to the red areas of a tattoo which had been administered 6 years before. Topical treatment with steroids had not been successful. As a result of clinical, histopathological and immunohistochemical findings and genotyping (polyclonal proliferation) the diagnosis of pseudolymphoma was made and total excision of the lesion was performed.     

Necrobiosis lipoidica diabeticorum in a tattoo site

BACKGROUND: Trauma is an immediate triggering factor in the development of necrobiosis lipoidica diabeticorum (NLD). NLD has previously never been documented in a tattoo site. OBJECTIVE AND CONCLUSION: Here we report an otherwise healthy 35-year-old woman with an area of NLD located in a tattoo site. Initial injection with intralesional triamcinalone acetonide showed no benefit. Subsequent application of betamethasone valerate cream did not lead to improvement of the lesion.     

Basal cell carcinoma arising in a tattoo

Basal cell carcinomas arising in tattoos have been reported previously in four patients. We present the fifth reported case of a basal cell carcinoma arising in a tattoo that was at a site not frequently exposed to ultraviolet radiation and briefly review malignancy in tattoos.     

Cutaneous Sarcoidosis Clinically Mimicking Necrobiosis Lipoidica in a Patient with Systemic Sarcoidosis

A 70-year-old woman with an 8-year history of systemic sarcoidosis developed round, red-brown eruptions, with central atrophic lesions on her lower legs. The features of the biopsy specimen resembled those of necrobiosis lipoidica (NL), but although necrobiosis was present there were well-formed non-necrotizing granulomas in the dermis. The histological diagnosis was cutaneous sarcoidosis. Systemic sarcoidosis presenting with NL has rarely been reported. The histological features of cutaneous sarcoidosis sometimes mimic those of other granulomatous diseases, including NL and granuloma annulare, which are difficult to distinguish. We discuss the novel association between sarcoidosis and other granulomatous diseases.