No abstract

IntroductionAcrokeratoelastoidosis is a rare condition characterized by bilateral multiple hyperkeratotic papules on the palms, soles, and dorsum of the hands and feet. To the best of our knowledge, only around 40 cases of acrokeratoelastoidosis have been reported worldwide, which are mostly familial.Case presentationWe report the first case from Saudi Arabia in a 5-year-old Saudi girl of Arabian origin, who presented symptoms of acrokeratoelastoidosis with unilateral sporadic keratosis on her left hand and left foot. We also review the clinical and histopathologic features, etiology, differential diagnosis and its treatment.ConclusionsGiven the rarity of acrokeratoelastoidosis, little is known about the disease. Further studies are required to understand the pathogenesis of the disease for better treatment options. Additional case reports of acrokeratoelastoidosis will help in recognizing risk factors, patient characteristics, environmental influences and possibly new etiological factors.

Intravascular large cell lymphoma is a rare subtype of extranodal large cell lymphoma characterized by the presence of neoplastic cells within the lumina of small vessels. Most cases of intravascular large cell lymphoma have a B-cell phenotype. To date, 12 cases of intravascular natural killer (NK/)/T–cell lymphoma (IVNKL) have been reported. Our case is A 47-year-old female presented with erythematous patches and plaques on the lower extremities mimicking panniculitis clinically. A skin biopsy revealed intravascular lymphoma (IVL) with a NK/T cell phenotype (positive for CD3, and granzyme B and negative for CD20, CD4, CD8, CD5). The lymphoma cells were also positive for Epstein-Barr virus by Epstein-Barr virus-encoded RNA in situ hybridization test. Because this type of lymphoma is extremely rare, our case is documented and compared with the previously reported cases.

nAG (newt-Anterrior Gradient) protein is the key mediator of regrowth of amputated limbs in salamanders. In a previous work in our lab, a new nAG gene (suitable for humans) was designed and cloned. The cloned vector was transfected into primary human fibroblasts. The expression of nAG in human primary fibroblasts was found to suppress collagen expression. The current study shows that local injection of recombinant nAG reduces scar hypertrophy in the rabbit ear model. This is associated with lower scar elevation index (SEI), lower levels of collagen I & III, higher levels of MMP1, and a higher degree of scar maturation in experimental wounds compared to controls.