Metastatic Adenocarcinoma of the Lung Presenting as a Presternal Cutaneous Mass: Case Report and Brief Literature Review.

BACKGROUND: Cutaneous metastases from lung cancer are uncommon; they can be the presenting sign of an unknown malignancy. CASE REPORT: We present a 53-year-old man with a presternal mass that proved to be a cutaneous metastasis revealing an underlying lung adenocarcinoma. We searched the relevant literature and present a review of the main clinical and pathological features of this type of cutaneous metastasis. CONCLUSION: Skin metastases are a rare manifestation of an underlying lung cancer, of which they can be the initial manifestation. Recognition of these metastases is important to promptly introduce an appropriate treatment.

Cutaneous calciphylaxis of the glans penis presenting as a gangrenous ulceration.

Report _Case Presentation X Photo Vignette _Letter Authors declare that the contents of this article are their own original unpublished findings. Title: Cutaneous calciphylaxis of the glans penis presenting as a gangrenous ulceration Authors: Marie Danset, Cécile Lesort, Denis Jullien, Jean Kanitakis Affiliations: Dermatology Department, Edouard Herriot Hospital, Hospices Civils de Lyon, Claude Bernard Lyon I University, Lyon, France Corresponding Author: Jean Kanitakis, Department of Dermatology, Edouard Herriot Hospital Group, 69437 Lyon Cedex 03, France, Tel: 33-472110301, Email: jean.kanitakis@univ-lyon1.fr Abstract: Calciphylaxis is a rare microvascular disorder causing necrotic skin ulcers. It is characterized by deposits of calcium within vascular walls but its precise pathogenesis remains poorly understood. A major risk factor is end-stage renal disease on dialysis. We report a 67-year-old man with calciphylaxis revealed by an unusual necrotic ulcer of the glans penis. The patient also presented with bilateral panniculitis of the thighs and a calf ulcer. All those lesions were painful, highlighting the value of pain as a diagnostic clue. Penile involvement of calciphylaxis is rare and biopsy is often avoided in this area. However, rapid diagnosis of calciphylaxis is important because early treatment has a better chance of being successful. Our patient's condition deteriorated rapidly with development of bilateral retinal artery occlusion and he died shortly thereafter. This case further highlights the fact that calciphylaxis is a systemic vascular disease with an ominous prognosis.

Chilblain-like acral lesions during the COVID-19 pandemic ("COVID toes"): Histologic, immunofluorescence, and immunohistochemical study of 17 cases.

BACKGROUND: During the coronavirus disease 2019 pandemic, several acral chilblain-like lesions were observed in young patients with suspected, but mostly unconfirmed, infection with severe acute respiratory syndrome coronavirus 2. The histopathologic aspect of these lesions is as yet poorly known. OBJECTIVE: To investigate the pathologic features of chilblain-like lesions. METHODS: Biopsies were obtained from 17 cases of chilblain-like lesions during the coronavirus disease 2019 pandemic in France and were studied by routine histologic examination, immunohistochemistry, and direct immunofluorescence. The patients had suspected but unconfirmed infection with severe acute respiratory syndrome coronavirus 2 (negative nasopharyngeal polymerase chain reaction and serologic test results). RESULTS: Chilblain-like lesions showed many features in common with those reported in idiopathic and autoimmune-related chilblains, including epidermal necrotic keratinocytes, dermal edema, perivascular and perieccrine sweat gland lymphocytic (predominantly CD3/CD4+) inflammation, and frequent vascular changes (endothelialitis, microthromboses, fibrin deposition, and immunoreactant deposits on vessels). CONCLUSIONS: Chilblain-like lesions show histopathologic features similar to those of idiopathic and autoimmune-related chilblains, with a high rate of vascular changes and direct immunofluorescence positivity. The role of severe acute respiratory syndrome coronavirus 2 in the development of these puzzling lesions remains to be elucidated.