Pharyngeal Arches, Chapter 1: Normal Development and Derivatives.

The pharyngeal arches form the cornerstone of the complex anatomy of the face and neck. These embryologic structures are the foundation of face and neck development, and anomalous growth can result in craniofacial abnormalities. Surgeons who manage head and neck pathology and pathoanatomy will invariably encounter conditions associated with aberrant pharyngeal arch anatomy, and a thorough understanding of the normal and pathological development of these important structures is paramount to accurate diagnosis and treatment.

Iatrogenic Calcinosis Cutis in the Pediatric Patient: Case Report and Literature Review.

Calcinosis cutis is the term used to describe the deposition of calcium compounds within the skin and subcutaneous tissue, which can occur after the administration of intravenous calcium compounds. Its etiology is broad, and the clinical presentation is variable, creating a diagnostic challenge. Although iatrogenic calcinosis cutis is extremely uncommon, awareness and early diagnosis of this entity can reduce the risks of severe complications, including soft tissue damage, restricted joint mobility, and even nerve compression.

Redefining Mild Traumatic Brain Injury (mTBI) delineates cost effective triage.

Objectives: Mild traumatic brain injury (mTBI) is defined as Glasgow Coma Score (GCS) of 14 or 15. Despite good outcomes, patients are commonly transferred to trauma centers for observation and/or neurosurgical consultation. The aim of this study is to assess the value of redefining mTBI with novel radiographic criteria to determine the appropriateness of interhospital transfer for neurosurgical evaluation.

A Series of Cerebral Venous Sinus Thromboses Treated with Intra-Arterial tPA infused over Ten Hours with a 0.027-inch Catheter and Literature Review.

Cerebral venous sinus thrombosis (CVST) can have devastating results, with mortality reported in 44% of cases. No randomized trials exist in order to define what qualifies as failure of conservative therapy, and there is no specific intervention to date which is considered safe and effective. Case series suggest that thrombolysis infusion is safer than thrombectomy, but methods of administration, dose, and duration of therapy tend to vary widely.

Rapid tumoritropic accumulation of systemically injected plateloid particles and their biodistribution.

Nanoparticles for cancer therapy and imaging are designed to accumulate in the diseased tissue by exploiting the Enhanced Permeability and Retention (EPR) effect. This limits their size to about 100nm. Here, using intravital microscopy and elemental analysis, we compare the in vivo localization of particles with different geometries and demonstrate that plateloid particles preferentially accumulate within the tumor vasculature at unprecedented levels, independent of the EPR effect.