Clinicopathological features of congenital hemangioma: a study of 40 cases / 中华病理学杂志

Objective: To investigate the clinical and pathologic features, diagnosis and differential diagnosis of congenital hemangioma (CH). Methods: Forty cases of CH were diagnosed from January 2017 to December 2020 in Henan Provincial People's Hospital. The clinical and pathological and immunohistochemical data were analyzed, with review of literature. Results: There were 24 male and 16 female patients. The lesions were located in the head, neck (11 cases), limbs (14 cases), and trunk (15 cases). The clinical manifestations were congenital painless plaques or masses, the larger ones protruded on the skin surface, mostly dusky purple or bright red, with surrounding white halos. Under low magnification, the tumor was lobular and well demarcated, composed of neo-microvascular lumen of different sizes. The vascular endothelial cells were cuboidal or hobnail in appearance, forming stellar drainage vessels within the lobules. Extra-medullary hematopoiesis was seen in one case of rapidly involuting CH; there were different number of tortuous and dilated vascular lumen between the lobular structures, and some non-involuting CH cases were vascular malformations, which were devoid of lobulated structures. Immunohistochemistry showed that endothelial cells were strongly positive for CD31, CD34 and ERG, while D2-40 and GLUT-1 were negative. Conclusions: CH is a benign congenital vascular tumor with characteristic lobulated growth and abnormal blood vessels in the stroma. Pathological diagnosis often needs to be differentiated from infantile hemangioma, pyogenic granuloma, kaposiform hemangioendothelioma and vascular malformation.

Relationship between low-grade squamous intraepithelial lesions and high risk human papillomavirus / 临床与实验病理学杂志

Purpose To study the infection mode and distribution of high risk human papillomavirus (HR-HPV) in lowgrade squamous intraepithelial lesions (LSILs) and to analysis its effect.Methods HPV genotype of 328 cervical tissues embedded by paraffin which contained 168 LSILs and 160 highgrade squamous intraepithelial lesions (HSILs) were detected by the methods of real-time fluorescence quantitative PCR and in situ hybridization.Results Diseased cells of LSIL stained with hematoxylin and eosin(HE) were concentrated in the upper layer of the cervical squamous epithelium,whereas HSIL were concentrated in the lower layer of the epithelium in HE staining.In LSIL,the positive ratcs of HR-HPV was 95.2％.In LSIL and HSIL,HPV 16/18 positive rates were 26.2％,57.5％,respectively.Other HR-HPV positive rates were 80.9％,55.0％,respectively.The differences were statistically significant (P ＜0.001).HR-HPV positive rate was 70.2％ in the group of in situ hybridization.The positive cells were confined to the surface and middle layer of the LSIL cervical squamous epithelium.Conclusion HR-HPV infection is closely related to LSIL,especially other HR-HPV (except for HPV 16/18).The infection mode of HR-HPV in LSIL starts from the surface layer of the cervical squamous epithelium.