[Efficiency of imatinib in polyserositis revealing a FIP1L1-PDGFRA-negative hypereosinophilic syndrome].

Introduction: Hypereosinophilic syndromes rarely manifest as polyserositis. Imatinib mesylate is the reference treatment for myeloid variants of FIP1L1-PDGFRA-positive hypereosinophilic syndromes. A response to imatinib has also been reported in FIP1L1-PDGFRA-negative hypereosinophilic syndromes.

Successful treatment with rituximab in a patient with mental nerve neuropathy in primary Sjögren's syndrome.

We present the case of a 79-year-old female patient with chronic obstructive pulmonary disease on home oxygen therapy who was diagnosed as having Sjögren's syndrome with arthralgias and painful sensory neuropathy. She subsequently developed bilateral numb chin syndrome. Because of refractory and disabling symptoms under high corticosteroids and severe chronic obstructive pulmonary disease, we decided to treat her with rituximab rather than immunosuppressants.

[Carcinoma of unknown primary site].

Purpose: Carcinoma of unknown primary site is a common clinical syndrome, accounting for 2% of cancer patients. Diagnosis is a recurrent challenge for internists. Treatment is difficult and prognosis is still poor.

Cricoarytenoid arthritis in Sjögren's syndrome.

We present the case of a 50-year-old female with polyarthralgias and dysphonia. Indirect laryngoscopy revealed the presence of cricoarytenoid arthritis. The patient complained of dryness of the eyes and oral mucosa and was diagnosed with Sjögren's syndrome.

[Systemic manifestations of Parvovirus B19 infections].

Purpose: Parvovirus B19 (B19) causes many clinical disorders, of which the most common are erythema infectiosum, aplastic crisis complicating chronic hemolytic anemia, and hydrops fetalis. In young adults, the skin eruption caused by B19 is accompanied by polyarthritis and polyarthralgia in 60% of the cases. Rheumatoid factors and other antibodies including antinuclear antibodies, anti-ADN, and antiphospholipids can be produced in the wake of B19 infection.