No abstract available.
Anal Canal*

A study was performed to observe the sequential morphological change of the human placental barrier by means of light microscopy, immunohistochemistry, scanning electron microscopy and transmission electron microscopy. The examined placentas ranged in age from 4 weeks gestation to the full-term(40 weeks). Sixty seven placental specimens were obtained immediately after delivery. With the progression of gestation, the microvilli on the surface of syncytinum tended to be fewer, shorter and blunter. The syncytiotrophoblasts were getting thinner with formation of vasculo-syncytial membrane. The cytotrophoblasts formed a continuous layer which progressively disappeared but still present in the mature villi. In view of presence of intermediate cells and remnant of desmosomes, the cytotrophoblasts appeared to form the syncytiotrophoblasts. In early pregnancy, capillary formation took place by the aggregation and differentiation of the proliferation and aggregation of endothelial cells and pericytes. Myofibroblasts in villous stroma were examined by desmin immunohistochemical staining, and detected from 19 weeks to the full-term. During last period of pregancy definitive smooth muscle cells could be demonstrated, suggesting that the presence of myofibroblasts or smooth muscle cells are closely related to the placental maturity. Scanning electron microscopy of the early placenta showed numerous syncytial sprouts representing stages in the formation of new villi, but in the late period of gestation syncytial sprouts were diminished. It is concluded that the syncytiotrophoblast is originated from the cytotrophoblast in early pregnancy as the placental barrier is formulated. Moreover, myofibroblasts and smooth muscle cells in villous stroma play important role in placental maturation.
Pregnancy ; Female ; Humans

Phycomycosis is an uncommon opportunistic fungal infection, involving several organs, such as brain, lungs, gastrointestinal tract and skin. Invasion of joint cavity by phycomycetes, however, has never been reported. We report a case of 33-year-old male who had had prehallux with congenital equinovarus and underwent correction operation on the right ankle joint. There after, joint pain and edema had developed on that site. He received reoperation and underwent excisional biopsy from there. Operation showed hypertrophied yellowish synovium. On microscopic examination, the tissue showed several foci of fibrinoid necrosis and suppurative and granulomatuous inflammation. Periodic acid Schiff stain demonstrated broad. Aseptate hyphae that were wrinkled and folded.
Male ; Humans ; Biopsy

No abstract available.
Accidents, Traffic* ; Aggression*

No abstract available.
Analgesia* ; Animals ; Fenclonine* ; Mice* ; Naloxone* ; Swimming*

No abstract available.
Animals ; Mice* ; Swimming*

No abstract available.
Hysteroscopy*

No abstract available.
Hysteroscopy*

No abstract available.

The authors observed one case of typical Kaposi's sarcoma who was 24 year old male. This patient complained of dark-brownish pigmented macules and oozing ulcer on the right knee joint area since at birth and the lesions were slowly growing and increased the number with pain. The skin lesions revealed 3*2.5cm sized dark-brownish colored macuIe, 2.5*3*1cm sized blood discharged nodule and 1* 1cm to l. 5* l. 5cm sized dark-brownish atrophic macules on the right inguinal area.Histopathologically, a biopsy was done on the right knee joint area, the finding showed angiomatous and fibrotic nature, I.e. the blood vessels in the dermis were dilated and increased in number. The endothelial cell was large and protrude into the lumen and showed small group of extravasated erythrocytes in granulation tissue, and showed extensive proliferation of spindle shaped cells that extended irregularly into various direction.
Biopsy ; Blood Vessels ; Dermis ; Endothelial Cells ; Erythrocytes ; Granulation Tissue ; Humans ; Knee Joint ; Male ; Parturition ; Sarcoma, Kaposi* ; Skin ; Ulcer ; Young Adult