Narrative trajectories of disaster response: ethical preparedness from Katrina to COVID-19.

While COVID-19 brings unprecedented challenges to the US healthcare system, understanding narratives of historical disasters illuminates ethical complexities shared with COVID-19. In 2005, Hurricane Katrina revealed a lack of disaster preparation and protocol, not dissimilar to the challenges faced by COVID-19 healthcare workers. A case study of Memorial Hospital during Hurricane Katrina reported by journalist-MD Sheri Fink reveals unique ethical challenges at the forefront of health crises.

X-linked dominant protoporphyria in a Chinese pedigree reveals a four-based deletion of .

Background: X-linked dominant protoporphyria (XLDPP) is a rare, hereditary disorder that leads to hepatobiliary and hematologic abnormalities including increased erythrocyte protoporphyrin, cutaneous photosensitivity, and decreased iron stores that is caused by a pathogenic mutation of gene.

Methods: This study aimed to confirm the existence of XLDPP in a Chinese pedigree. We observed and described the dermatoscopic findings of this disorder under dermoscopy, and assessed photo damage in XLDPP patients using the Fotofinder system and very high frequency (VHF) skin ultrasonic system.

Clinical and pathological features of myeloid leukemia cutis.

Background: Myeloid leukemia cutis is the terminology used for cutaneous manifestations of myeloid leukemia.

Objective: The purpose of this study was to study the clinical, histopathological and immunohistochemical features of myeloid leukemia cutis.

Methods: This was a retrospective study of clinical and pathological features of 10 patients with myeloid leukemia cutis.

5-Hydroxymethylcytosine is a nuclear biomarker to assess biological potential in histologically ambiguous heavily pigmented melanocytic neoplasms.

Background: 5-Hydroxymethylcytosine (5-hmC) is an epigenetic marker detectable through immunohistochemistry (IHC) that has been shown to distinguish benign nevi from melanoma with high sensitivity and specificity. The purpose of the study was to explore its diagnostic utility in a subset of histologically challenging, heavily pigmented cutaneous melanocytic neoplasms.

Methods: 5-hmC IHC was performed on 54 heavily pigmented melanocytic tumors.

Expression of angiogenic switch, cachexia and inflammation factors at the crossroad in undifferentiated thyroid carcinoma with BRAF(V600E).

Cachexia is the result of complex metabolic alterations which cause morbidity and mortality in patients with advanced cancers including undifferentiated (anaplastic) thyroid carcinoma (ATC). ATC is a lethal disease with limited therapeutic options and unclear etiology for cachexia. We hypothesize that the BRAF(V600E) oncoprotein triggers microvascular endothelial cell tubule formation (in vitro angiogenesis) by means of factors which play a crucial role in angiogenic switch, inflammation/immune response and cachexia.

[Study on needling depth of Fengfu (GV 16) with CT].

Objective: To study on needling safe depth of Fengfu (GV 16) with CT, so as to provide reference for safe needling depth of Fengfu (GV 16) in clinical acupuncture treatment.

Methods: Forty-one adult volunteers were divided into 3 groups, a thin person group, a moderate person group and a fat person group according to Luo's indexes, and computer-aided tomography (CT) was used to measure the needling depth of Fengfu (GV 16).

Results: The safe depths of perpendicular needling of Fengfu (GV 16) were different for persons of different somatotypes.