antineutrophil cytoplasmic autoantibody (anca)-associated vasculitis (aav) is a small-vessel vasculitis, characterized by necrotizing inflammation of small vessels and positive ancas. cancas are directed against proteinase-3 (Pr-3) and are specific for granulomatosis with polyangiitis (GPa, formerly known as Wegener’s disease), although their role in the immunopathology of the disease is still unclear. This is why the european medicines agency suggested that canca positivity, in addition to the clinical picture, can be enough for the diagnosis of GPa. Granulomatosis with polyangiitis is characterized by granulomatous inflammation that usually involves the upper and lower respiratory tract, necrotizing vasculitis that affects small and medium-sized vessels, and often rapidly progressive glomerulonephritis. We present a patient with an unusual presentation of canca-associated vasculitis, who presented with arthritis, palpable purpura on legs, and pauci-immune necrotizing glomerulonephritis with highly positive canca antibodies, without any signs or symptoms of airway involvement. although renal-limited anca vasculitis is recognized as a separate entity, our patient also had signs of skin and joint involvement and prominent constitutional symptoms that contributed to the diagnosis of systemic disease. in this paper, we present a patient with an atypical course of GPa, which can also be called a limited form of the disease. an atypical course or limited form belongs to the group of sine syndromes in inflammatory rheumatic diseases, which are not very common, but should be considered in the differential diagnosis. to our knowledge, there are only a few described case reports with a similar presentation.

Preface vii List of participants ix Rings whose proper images are almost self-injective Adel Alahmadi, André Leroy, and Surender K. Jain 1 Enveloping skewfields of the nilpotent positive part and the Borel subsuperalgebra of osp(1, 2n) Jacques Alev and François Dumas 7 The Krull-Schmidt-Remak-Azumaya Theorem for G-groups Meltem Altun-Özarslan and Alberto Facchini 25 Good codes from metacyclic groups Samir Assuena and César Polcino Milies 39 The prime ideals and simple weight modules of the algebra U(b V3) V. V. Bavula and T. Lu 49 n-torsion clean rings Peter Danchev and Jerzy Matczuk 71 Generating characters of non-commutative Frobenius rings Steven T. Dougherty, Arda Kör, and André Leroy 83 Constacyclic codes over local rings of order 16 Steven T. Dougherty and Esengül Saltürk 93 Skew Reed-Muller codes Willi Geiselmann and Felix Ulmer 107 The extension theorem for bi-invariant weights over Frobenius rings and Frobenius bimodules Oliver W. Gnilke, Marcus Greferath, Thomas Honold, Jay A. Wood, and Jens Zumbrägel 117 Dual skew codes from annihilators: Transpose Hamming ring extensions José Gómez-Torrecillas, F. J. Lobillo, and Gabriel Navarro 131 Injective hulls of simple modules over nilpotent Lie color algebras Can Hatipoğlu 149 U -rings generated by its idempotents Yasser Ibrahim and Mohamed Yousif 157

Results obtained by studying the possibility of replacing cement in mortars with local industrial by-products, i.e. with silica fume and red mud, are provided in the paper. The results of fresh and hardened mortar properties tests conducted on five mixtures in two series are presented. 10% of cement was replaced with silica fume, and 0%, 5%, 10%, 15% and 20% of cement weight was replaced with red mud. The first series was tested after 28 days of curing, and the second series was subjected to freezing and thawing cycles after proper curing, and then submitted to testing. The results point to satisfactory behaviour of mixtures with a low red mud content.