@entity1358 with pseudorosettes (DCNWPR) is a rare @entity1263 ( @entity1263 ). To our knowledge, the only reported case of DCNWPR in Japan was documented by our team. We experienced three additional cases of DCNWPR in our institute since 2007, and report the clinical and histological features of DCNWPR of these Japanese cases. All four @entity1 were adult @entity1 , with ages ranging 48-77  years (mean, 63.8). All @entity1 presented with small solitary lesions that were clinically diagnosed as @entity81 , @entity8205 or @entity1489 . Three cases were located on the back, and one on the cheek. Histopathologically, well-circumscribed nodules were present in the dermis, and composed of small lymphocyte-like cells with dark nuclei (type I cells) and larger cells with pale vesicular nuclei and abundant eosinophilic cytoplasm (type II cells). Small type I cells were grouped concentrically around the larger type II cells, thereby forming pseudorosettes. Immunohistochemical studies using antibodies against @entity4755 and @entity4483 protein revealed that type II cells contained a copious cytoplasm endowed with a network of slender dendritic extensions. @entity4755 should be a useful marker for identifying type II cells because it allows these cells to be stained exclusively. We should recognize DCNWPR with its characteristic histological features such as pseudorosettes and presence of @entity1358 as a variant of @entity1263 .

Four Japanese cases of XXXX with pseudorosettes.

@entity1 :: ('9606', 'Species') :: ['women', 'patients'] @entity1263 :: ('MESH:D010524', 'Disease') :: ['PNST', 'peripheral nerve sheath tumor'] @entity1489 :: ('MESH:D012878', 'Disease') :: ['mixed tumor of the skin'] @entity8205 :: ('MESH:D009508', 'Disease') :: ['melanocytic nevus'] @entity4483 :: ('6285', 'Gene') :: ['S100'] @entity4755 :: ('27087', 'Gene') :: ['CD57'] @entity1358 :: ('MESH:D002292', 'Disease') :: ['dendritic type II cells', 'Dendritic cell neurofibroma'] @entity81 :: ('MESH:D005350', 'Disease') :: ['fibroma']
@entity1358 :: (MESH:D002292,Disease) :: ['dendritic cell neurofibroma']
