ULTRASOUND DIAGNOSIS OF MACROSOMIA AMONG WOMEN WITH GESTATIONAL DIABETES - REVIEW OF THE LITERATURE.

Pregnancies burdened with gestational diabetes (GDM) are more likely to end in birth of a macrosomic child, where the frequency of operative termination of pregnancy is more common, accompanied with more complications and injuries of both mother and child in comparison to the general population. The need to calculate fetal weight right before delivery has led to the development of numerous methods for greater estimation accuracy. We reviewed the related literature from 1980 to 2020, using the terms macrosomia, ultrasound assessment, gestational diabetes, and relevant articles were considered in preparation of this article. The most frequently used methods are based on two-dimensional ultrasound measurements of individual fetal biometric parameters and their combination in a mathematical regression model. Some methods involve the addition of other mother and child conditions to increase reliability of the method in recognizing macrosomia. In daily work, especially with pregnant women suffering from GDM, it is necessary to have reliable data on the estimated fetal weight before making the correct clinical decision on how to terminate the pregnancy. In this regard, we bring a review of the literature related to the assessment of fetal macrosomia, especially in women with GDM.

Immunohistochemical appearance of HNE-protein conjugates in human astrocytomas.

Gliomas are tumors originating from astrocytes, oligodendrocytes or ependimal cells. Those of astrocytic origin are the most widespread of primary brain tumors and account for more then 60% of all CNS neoplasms. The current state of knowledge on the associations between tumor etiology and oxidative stress suggests that environmental factors that cause oxidative stress could also induce and promote cancer, especially in case of hereditary predisposition. Among mediators of oxidative stress, lipid peroxidation product 4-hydroxynonenal (HNE) is of particular relevance in oncology, as it is known to act as a growth-regulating factor and a signaling molecule. The aim of present study was to investigate by immunohistochemistry the presence of HNE-modified proteins in different types of astrocytoma. Our study comprised 45 astrocytic tumors. These tumors were graded in accordance with the WHO classification as diffuse astrocytomas (DA), anaplastic astrocytomas (AA) and glioblastomas (GB), while each group comprised 15 tumors. Slides of paraffin-embedded tumor tissue were stained with hematoxylin-eosin or were prepared for immunohistochemistry with monoclonal antibodies to HNE-histidine conjugate. Positive immunohistochemical reaction to HNE was analyzed semi-quantitatively. HNE positivity was proportional with malignancy of astrocytomas. The weakest presence of HNE-histidine adducts was found in DA, followed by AA and GB. Lowest intensity of HNE immunopositivity was present in tumor cells of almost all DA, predominantly around blood vessels. In malignant variants of astrocytoma, AA and GB, HNE positivity was moderate to strong, and diffusely distributed in all tumors.

[Isolated cervical spinal cord hemangioblastoma--case report]. / Izolirani hemangioblastom vratne kraljeznicne mozdine--prikaz bolesnika.

Hemangioblastomas are rare tumors which account for 0.9-2.1% of central nervous system neoplasms. The most common site of hemangioblastomas is the cerebellum, while they are rarely located in spinal cord, cerebrum and brain stem. Hemangioblastomas occur as a sporadic entity, and as a manifestation of von Hippel-Lindau syndrome. A 33-year old patient with isolated cervical spinal cord hemangioblastoma is presented.