Cutaneous angiosarcoma of head and neck

Cutaneous angiosarcoma is a rare aggressive tumor of capillary and lymphatic endothelial cell origin. Cutaneous angiosarcoma of the head and neck regions seems to be a distinctive neoplasm with characteristic clinicopathologic features that differ from angiosarcoma in other anatomic locations. Angiosarcoma, regardless of their setting, has a bad prognosis. We presented here a case of 80 years old male, with multiple nontender grouped purple to red hemorrhagic vesicular and bullous lesions over left lower cheek and upper neck area, with bilateral cervical lymph nodes since 1 month. Computed tomography thorax showed nodular opacities in the right upper and midzones. Excisional biopsy showed characterstic "dissection of collagen" with mild nuclear atypia. Immunohistochemistry showed tumor cell positive for CD-31 and Fli-1. Patient died within 1 month of presentation

Mycosis Fungoides: Tumour d′emblee

Mycosis Fungoides is a Cutaneous T-cell lymphoma characterized by infiltration of skin with patches, plaques, and nodules composed of T-lymphocytes. It is the most common type of Cutaneous T-Cell Lymphoma and accounts for almost 50% of all primary cutaneous lymphoma. Tumour d′ emblee is the term used for the patient presenting with skin tumors not preceded by patches or plaques. We report a rare case of mycosis fungoides d′ emblee variant with tumors of only 3 months duration without any preceding skin lesions

Ofuji's disease in an immunocompetent patient successfully treated with dapsone

Eosinophilic pustular folliculitis or Ofuji's disease is a non-infectious eosinophilic infiltration of hair follicles, which usually presents with itchy papules and pustules in a circinate configuration. We report this case of an immunocompetent patient with erythematous papules and plaques without macropustules diagnosed as eosinophilic pustular folliculitis—a rarely reported entity outside Japan. He was successfully treated with oral dapsone

Recent changes in atmospheric input and primary productivity in the north Indian Ocean

Global oceanic regions are rapidly changing in terms of their temperature, oxygen, heat content, salinity and biogeochemistry. Since the biogeochemistry of the oceans is important and pivotal for global food production, and a major part of the world population relies on marine resources for their daily life and livelihood, it is imperative to monitor and find the spatio-temporal changes in the primary productivity of oceans. Here, we estimate the changes in Chlorophyll-a (Chl-a) and Net Primary Productivity (NPP) in the north Indian Ocean (NIO) basins of Bay of Bengal and Arabian Sea for the period 1998–2019. We find a substantial reduction of NPP in NIO since 1998 (−0.048 mg m−3 day−1 yr−1) and the increase in sea surface temperature (SST) (+0.02 °C yr−1) is the primary driver of this change. Furthermore, there is a significant (10–20%) change in the air mass or dust transport to NIO from the period Decade 1 (1998–2008) to Decade 2 (2009–2019). This change in air mass trajectories has also altered NPP in both basins through the changes in nutrient input and associated biogeochemistry. Henceforth, this study cautions the changes in primary productivity of NIO, and suggests regular assessments and continuous monitoring of the physical and biological processes from a perspective of food security and ecosystem dynamics