[Recurrent polychondritis].

Clinical and histological findings are presented as occurring in a male aged 24 years suffering from relapsing polychondritis (r. p.) of 7 years duration.

[Arthropathy in the Weber-Christian disease].

It is reported on five cases of Weber-Christian's syndrome which were observed in our institute during the last years due to difficulties involving motion organs. In three of the cases short-term arthritis was found and in one of the cases erosion arthritis of rheumatoid type was found, too. As far as the last case is concerned detailed information on the system manifestation of the patient is given; the disease started in her young days with regular relapses and visceral manifestation.

Hemangiopericytoma.

Description of e hemangiopericytomas noted in a 25-(female), 24-(female) and 44-(male) year old patient. Histological examination revealed, besides characteristic appearance of tumor cells, typical arrangement of reticuline. The authors discuss the histological criteria for diagnosis and differential diagnosis and judging benignity and/or malignity of hemangiopericytomas.