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Purpose of the study. To provide demographic, clinical, laboratory, ultrasound, radiological, morphological/ immunomorphological phenotype of IgG4-related ophthalmic diseases, which allowsmaking a differential diagnosis with granulomatous, autoimmune, inflammatory, endocrine and hematologic diseases affecting the eye and orbits. Materials and methods. From 2004 to 2016 108 (78.2%) of the 138 patients were diagnosed with non-tumoral lesions of eye and orbits. In 48 patients (35%) at admission and 5 patients in the follow were diagnosed IgG4-related ophthalmic disease. In the analysis of 82 (f-44, m-38) patients with IgG4-related disease, localization of lesions in orbit observed in 53 (f-36, m-17) and it was the most frequent involvement in patients with IgG4-related disease (64.5%). Only 7 patients had isolated IgG4-related ophthalmic disease, whereas 46 patients (87%) had involvement of 2-7 locations, as a manifestation of IgG4-related systemic disease.During the examination, the average age of patients with IgG4-related ophthalmic disease was 47.5 years (19-73 years). Median time to diagnosis was 52.8 months before 2004 and 36 months 2004-2016. Results. We noted the predominance of females in the ratio 2: 1 inthe group of patients with IgG4-related ophthalmic disease. Edema of the eyelids, nasal congestion (55-60%), tumor-like formations of the upper eyelids and increased lacrimation prevailed at the onset of the disease, whereas such functional impairment like limited mobility and pain in eyeballs, exophthalmos, ptosis and diplopia appeared later at 15-38% with a loss visual acuity in one case. Bilateral lesion (86%), mainly affecting the lacrimal glands (93.5%), infiltration of the extraocular muscles (83.5%) and retrobulbar tissue with a thickening of the optic nerve in one third of patients were the main localizations IgG4-related ophthalmic disease. Clinical symptoms were accompanied by the appearance of moderate inflammatory activity (38%), increased levels IgG (44%), IgG4(88%) and IgE (61%). Indicators of autoimmune disorders observed in 6-22% of patients, most often in patients with simultaneous involvement of the salivary glands. Significant lymphoplasmacytic infiltration (94%) with a ratio of plasma cells (IgG4/IgG) secreting IgG4> 40% (90%) with fibrosis formation (94%) and follicle formation (71%) with a moderate amount of eosinophils (34%) were the major morphological / immunomorphological manifestations of IgG4-related ophthalmic disease. Signs of vasculitis and obliterative phlebitis were found in a small amount of patients. Conclusion. Determination of elevated levels of IgG-4 / IgE in patients with edema, pseudotumor of the eyelid, sinusitis and increase of the palpebral lobe of the lacrimal gland suggests the presence of IgG4-related ophthalmic disease. Minimally invasive incisional biopsy of lacrimal glands and salivary glands followed by morphological / immunomorphological research is needed for the correct diagnosis. Diagnostic orbitotomy in ophthalmic hospitals in such cases is inexpedient, since it leads to the development of dry eye. Massive lymphoplasmacytic infiltration with IgG4 / IgG ratio more than 40%, advanced fibrosis in biopsiesof the orbits tissue or salivary glands when combined lesions are required for the making the diagnosis of IgG4-related ophthalmic disease.

The paper reviews the publications dealing with Schnitzler syndrome, a rare autoinflammatory disease, and describes the authors’ own clinical observation. It describes the first Russian experience in successfully using the interleukin-1 inhibitor canakinumab to treat this disease.

The paper describes cancers (enteric adenocarcinoma in one case and acute leukemia in the other) in 2 patients with Behçet’s disease (BD) followed up at the V.A. Nasonova Research Institute of Rheumatology. It gives the data available in the literature on BD concurrent with malignant tumors. This concurrence is noted to substantially worsen the prognosis of the disease as a whole.

Objective: to consider clinical practice problems in the differential diagnosis of different types of plasma cell dyscrasias (PCD). Subjects and methods. Fourteen patients (8 men and 6 women) aged 52±12 years, in whom rheumatic diseases (RD) were ruled out and who were diagnosed as having primary PCD: different types of myeloma in 7 patients, myeloma + AL-amyloidosis in 2, AL-amyloidosis in 3, and Waldenstrom’s macroglobulinemia in 2, were examined. Results and discussion. The most common maldiagnosed RDs in patients with PCD were seronegative rheumatoid arthritis (RA), systemic lupus erythematosus, Sjogren’s disease, and different forms of vasculitis. The most frequent masks of RD were kidney (78%) and osteoarticular system (64%) lesions, vascular disorders (36%), peripheral polyneuropathies (36%), and enlarged salivary glands with xerostomia (28.5%). Serum and urine immunochemical study should be performed in all patients who have clinical manifestations of seropositive RA, spondyloarthritis, intensive bone pain syndrome, ulceronecrotic vasculitis, enlarged submandibular salivary glands with macroglossia in the absence of markers of autoimmune disease for the timely diagnosis of PCD and the exclusion of RD. The paper estimates the sensitivity and specificity of main methods used to diagnose different types of PCD.

Plasma cell dyscrasias (PCD) present certain difficulties in differentially diagnosing with autoimmune rheumatic diseases (RD) as they have some clinical and laboratory manifestations that are characteristic of the latter. Objective: to generalize the experience in diagnosing PCD at the Research Institute of Rheumatology (RIR), Russian Academy of Medical Sciences (RAMS). Subjects and methods. Nineteen patients admitted to the RIR, RAMS, for rheumatological referral diagnoses were diagnosed as having different types of PCD, both PCD in the presence of RD (n = 10) and primary PCD without RD (n = 9). Immunochemical studies of serum and urinary proteins and bone marrow trepanobiopsy were performed in all the patients. Histological studies were made of the minor salivary glands (n = 12), lymph nodes (n = 3), parotid salivary glands - PSG (n = 5), spleen (n = 1), cranial bones (n = 2) and humerus (n = 1). The immunophenotype of tumor lymphocytes in the biopsy and trepanobiopsy specimens were determined by an immunoflurenscence method with standard monoclonal antibody panels and the paraffin sections of biopsy specimens were examined by an immunoperoxidase technique. Biopsy and trepanobiopsy speciments and myelograms were assessed by the researchers of the N.N. Blokhin Russian Cancer Research Center, RAMS. Results. Over 10 years of follow-up, 19 patients (13 females and 6 males) were diagnosed as having different types of PCD: multiple myeloma (MM) (n = 9), extramedullary plasmacytoma of lymph nodes (n = 2), solitary plasmacytoma (SP) of bone (n = 2), Bence-Jones myeloma (BJM) (n = 2), primary amyloidosis (PA) (n = '), lymphoplasmacytic lymphoma (n = '), Waldenström's macroglobulinemia (WM) (n = 2). In the presence of RA, '0 patients with PCD developed Sjogren's disease (SD) (n = 7), rheumatoid arthritis (RA) + SD (n = 2), RA (n = '); and 9 patients had primary PCD (MM (n = 5), BJM (n = '), WM (n = '), SP (n = '), and PA (n = ')). These 9 patients with different rheumatological diagnoses were long followed up and referred to the RIR, RAMS, to specify these. One third of the patients had recurrent conjunctivitis, enlarged PSG and xerostomia (55%). Arthralgias, arthritis of minor and large joints, flexion contractures of hands, ossalgias, and pains in the lumbar spine and ribs were present in '0-45% of the patients. Vascular lesions, such as Reynaud's phenomenon, recurrent purpuras, lower extremity ulcerative lesions, and toe gangrenes, were observed in '0-35% of the patients with PCD. Lesions in the reticuloendothelial system, such as lymphadenopathy, splenomegaly ('5%), hepatomegaly (45%), and fever (25%), were also detected. Conclusion. Many clinical and laboratory manifestations of primary PCD and RD are similar and only the absence of classical laboratory markers of autoimmune disease, as well as the presence of serum monoclonal immunoglobulins and urinary Bence Jones protein suggest the presence of PCD, both primary PCDs and those with RD.

The paper describes two patients (a 50-year woman and a 72-year man) in whom the clinical manifestations of ulceronecrotic vasculitis had long preceded before the diagnosis of multiple myeloma was made. In the former, monoclonal cryoglobulinemia type I induced ulcerative lesions with the development of dry toe gangrene and paraproteinemic renal lesion. In the latter, ulceronecrotic vasculitis with the development of dry toe gangrene was a manifestation of monoclonal paraproteinemia without signs of cryoglobulinemia. Both patients were found to have monoclonal blood secretion (РIgGλ и РIgGκ) and urine Bence Jones protein (BJλ+BJκ, BJκ) in the absence of immunological markers of vasculitis developing in patients with rheumatic diseases. Immunochemical study of serum/urine and, when monoclonal secretion of PIg+BJ is detected, further examination for plasma cell dyscrasia should be performed in all cases of vascular disorders (cold allergy, Raynaud's syndrome, purpura, ulcers of cruses, and gangrene of distal phalanxes of the hands/feet) in patients with atypical vasculitis. The timely immunochemical study of blood and urine will make it possible to diagnose plasma cell dyscrasia (different types of myelomic disease, Waldenstrцm macroglobulinemia, primary amyloidosis) at the early stage of the disease and to rule out unjustifiably diagnosed vasculitis in patients with atypical vascular lesions.

Aim. To investigate the incidence of MALT-lymphoma in Sjogren's disease by means of biopsy of the enlarged parotid glands. Material and methods. The incisional parotid biopsy was performed in 57 primary Sjogren's syndrome (pSS) patients with existing parotid enlargement. The median age was 54 years (range 19-75 years). The median pSS duration was 7 years (range 1-30 years). The palpable parotid enlargement was defined as grade 1 and massive (visional) enlargement of the parotid glands was defined as grade 2. Histologic and immunohistochemical examinations for diagnosis of lymphoma were made. High resolution electrophoresis and immunofixation were performed for detection of monoclonal immunoglobulins in the serum and their free light chains in the urine. Results. Biopsy of he enlarged parotid glands identified MALT-lymphoma in 37 of 57 (64.9%) pSS patients. Of 37 pSS patients with parotid enlargement of grade 2, diagnosis of MALT-lymphoma was made in 89.2%. Of 20 pSS patients who had parotid enlargement of grade 1, MALT-lymphoma was diagnosed in 20%. In patients with grade 1 enlarged parotid glands MALT-lymphoma was identified only in cases with the presence of monoclonal immunoglobulins in the serum and their free light chains in the urine (3 of 4 patients) or in case of disseminated disease (lymphoma involved regional lymph nodes and soft tissues of the face) - 1 of 4 patients. In patients with grade 2 enlargement of parotid glands MALT-lymphoma located most frequently in affected parotid glands (69.6%). Conclusion. The incisional biopsy of enlarged parotid glands is necessary for detection of MALT lymphoma in pSS patients.

In the article is presented a detailed description of two rare cases of lymphoid neoplasia (αβT-cell large granular lymphocyte leukaemia and primary γδT-cell lymphoma of the spleen) in patients with rheumatoid arthritis. These examples illustrate several diagnostic problems we often face while searching for lymphoid tumors in patients with rheumatoid arthritis. A literature review is attached.

Aim. To specify the risk of severe systemic manifestations and transformation into malignant lymphoma in Sjogren's disease (SD) patients with monoclonal mixed cryoglobulinemia (MMC). Material and methods. A prospective study performed in 1985-1990 included 248 SD patients followed up after the initial detection of monoclonal immunoglobulins (Ig) with serum active rheumatoid factor (RF). The patients' cryoglobulins (CG) were examined. The type of CG was determined by electrophoresis in agarose gel combined with immunofixation and Immunoelectrophoresis with monospecific antisera to heavy and light Ig chains. Biopsies of the lower lip salivary glands and skin were made in all the patients with MMC and 40 patients without CG. The biopsies were studied histologically, histochemically and immunomorphologically. Clinical symptoms and prognosis were studied in all the patients observed in 1985-2000 after the initial diagnosis of MMC. In suspected lymphoma development, histological and immunophenotypical studies of lymph node, bone marrow biopsies, trephine biopsies were made as well as myelograms, Ga-67 scintigraphy, CTofthe thoracic and abdominal cavities. The total of clinical, morphological, immunophenotypical and cytogenetic characteristics of lymphoma was estimated by REAL classification. Results. CG at first examination was detected in 50 (20.2%) of 248 patients with SD. 20 (40%) of 50 patients were diagnosed to have MMC with monoclonal IgM% (19) and IgA (1) in the serum with RF activity. Ten (50%) patients with MMC developed lymphoma after 10.9 ±3.3 years, on the average. In the absence of CG lymphoma developed in 5.5% (p < 0.001). B-cell intoxication in patients with diffuse lymphadenopathy, foci of lymphoid infiltration in the lungs, ulcers of the cms and such indices as stab neutrophilic shift, monocytosis, hypoproteinemia with hypogammaglobulinemia, disappearance of the RF, CG, low CIC level, immunodeficiency of monoclonal Ig and appearance of the protein BJ in the urine are markers of developing large B-cell immunosecreting lymphomas. Highly aggressive diffuse LCL resulted in death of 70% SD patients with MMC; 30% died of immunocomplex cryoglobulinemic vasculitis. 10-15-year survival of SD patients after detection of MMC was 50%, free of CG - 97% (p < 0.001). Conclusion. MMC is a definite serological marker of developing lymphoma and ulcerative-necrotic vasculitis in SD. In detection of MMC in SD patients it is necessary to prescribe early pathogenetically validated treatment before development of life threatening manifestations.

During long term follow up (median 10 years) of 412 patients with primary Sjogren's syndrome (pSS) 46; (11,2%) women developed non-Hodgkin's lymphoma (NHL). Median pSS duration before development of NHL was 17 years. 43 (93,3%) patients had B-cell and 3 (6,7%) - T-cell NHL. All types of NHL were present except precursor cell lymphomas. Diffuse large B-cell lymphoma (LBCL) (39%) and MALT lymphomas (21%) prevailed. Nodal NHL with extranodal involvement (52,2%) were the most frequent. Nodal (21,8%) and extranodal (26%) lymphomas were less frequent. The most frequent target organs in lymphoproliferative disease (LPD) were lymph nodes (74%), salivary glands (45,5%), lungs (26%), bone marrow (19,5%), liver (17,5%), spleen (13%), lachrymal glands (6,5%). Waldeyer's throat ring (4%), oral cavity mucous membrane, ovary and brain (2%) were involved rarely. Immunoglobulin-secreting variant of lymphoma was revealed in 53,7% of cases. LPD developed predominantly in patients with systemic features and late stage of pSS. Significant increase of parotis, mixed monoclonal cryoglobulinemia, generalized lymphadenopathy, presence of more than 5 focuses of lymphoid infiltration in small salivary glands biopsies and thrombocytopenia were predictors of NHL development in pSS (p

We describe a rare case of myeloid/NK cell precursor acute leukemia (MNKL) in a 38-year-old woman. Upon diagnostic examination, a tumor invasion of bone marrow, lymphatic nodes, liver and spleen was found. The proportion of blasts in peripheral blood reached 54%. The blasts were polymorphic, with round or irregularly shaped nuclei. The tumor cells were negative for myeloperoxidase, non-specific esterase, and lipid staining. The blasts not only expressed CD13+ and CD33+ panmyeloid antigens, but also carried the markers of NK-cell differentiation (CD16+, CD56+, Perforin+). The leukemoid infiltration of liver, acute hepatitis and development of liver cell failure were the distinctive features of the described case. The issues pertaining to differential diagnostics and classification of MNKL are also discussed.