Case of successfully delivered dicavitary twins in uterus didelphus

Uterus didelphus is a congenital abnormality arising from failure of fusion of Mullerian ducts, creating two separate uterine horns, two cervices and, in some cases, a vagina divided by a longitudinal septum. In this case, a 26-year-old woman with previously undiagnosed uterus didelphus spontaneously conceived dicavitary twins. Although initially wanting a vaginal birth, when both twins were in a breech presentation, a caesarean section was performed at 36 weeks, delivering two healthy babies. We will discuss the risk of obstetric complications in uterus didelphus and the challenges surrounding a vaginal delivery.

Diagnostics and treatment of Herlyn–Werner–Wunderlich syndrome in a newborn girl

Herlin-Werner-Vanderlich syndrome refers to the Müllerian duct anomalies, including uterine didelphys, obstructed hemivagina, and ipsilateral renal agenesis. At the first stage of treatment, a reasonable intervention is opening the hemivaginal septum by extra-vaginal access under visual control or using vaginoscopy. We identified a rare variant of the defect identified, since the longitudinal septum of the hemivagina did not prolapse through the introinus, which required a complex diagnosis and surgical aid in the newborn. A significant volume of hydrometrocolpos was associated with the accumulation of urine from the right hypoplasmic kidney with an abnormal flow of the ectopic ureter into the cavity of the atresized vagina. It determined the need for surgical treatment for urgent indications. In this regard, a biochemical analysis of the fluid obtained after drainage of the hydrometrocolpos with the detection of the concentration of urea, creatinine, total protein, and cellular composition is mandatory.

Vascular and microvascular anatomy of the gill of the southern rock lobster, Jasus novaehollandiae Holthius

The vascular architecture of the gill of J. novaehollandiae was studied by light microscopy, scanning electron microscopy and vascular casting. Before fixation or infusion of the vascular casting medium, haemolymph was flushed from the lobster using 3.5% saline infused into the dorsal aorta. J. novaehollandiae has a complex gill circulation, with three types of gill filament present. The fewer, but larger, inner filaments have a longitudinal septum, from 3 to 8 pm thick, dividing them into afferent and efferent channels. By contrast, the septum in the outer filaments is 11-22�m thick. Middle filaments, found between the inner and outer ones, have two septa dividing them into three channels. The gill axis has four major vessels: an afferent vessel supplying the outer and middle filaments, two lateral canals draining the outer filaments, connecting to the middle filaments and supplying the inner filaments on each side of the gill, and an efferent vessel draining the middle and inner filaments. Thus, most of the haemolymph passes through both outer and inner filaments on its route through the gill. Movement of haemolymph from one channel to another within each filament is via a number of lateral lacunae around the sides of the filament. It is postulated that the relatively thick septum of the outer filament acts as a barner to counter-current loss of oxygen from the efferent to the afferent channels of the filament, whereas the thinner septum of the inner filament may not function in this capacity.

Forest microfungi. II. Additions to Acrodictys

The brief history of Acrodictys M. B. Ellis is reviewed and two new species from rotting bark of Populus are described and illustrated. Acrodictys fuliginosa n. sp. is characterized by non-proliferating conidiophores and obovate, shining-black conidia with three transverse and three to six longitudinal septa. In Acrodictys excentrica n. sp. a succession of variably shaped shining-black conidia is formed from the long, readily proliferating conidiophores. Conidia are typically five-celled, one of the two apparently lateral pale brown inflated cells is the recurved apical conidium cell and the other is separated from the basal conidium cell by a longitudinal septum.

PYRENOPHORA PHAEOCOMES (REB. EX FR.) FR.

The history of Pyrenophora Fr. was reviewed with special reference to Pleospora Rab. It was concluded that the two genera are distinct. The following characteristics were found to be of diagnostic value for Pyrenophora: ascocarps very large, sclerotioid, slow-maturing, usually setose, occurring on grasses; ascospores large, nearly cylindrical with rounded ends, with 3–5–7 transverse septa, and a longitudinal septum in from one to all cells depending on species. In addition, the known conidial states of Pyrenophora were noted to be species of the hyphomycete genus Drechslera Ito.An authenticated specimen of P. phaeocomes from the Fries Herbarium was used as a neotype in the apparent absence of Rebentisch's specimen. Numerous ascospores were found among the immature ascocarps on the leaves, and taken as evidence that the fungus is an ascomycete. The conidial-state association was tenuously confirmed by the presence of one Drechslera conidium. It was concluded that the name Pyrenophora can be used for the genus of ascomycetes typified by P. phaeocomes.

I.—Descriptions of New Upper Silurian Brachiopoda from Shropshire

Shell small, marginally sub-pentagonal, longer than wide, straight or slightly indented in front. Dorsal valve laterally gently convex, longitudinally concave, with a small median rib commencing at about the middle of the valve, and widening as it nears the front. Ventral valve very convex and keeled along the middle or divided longitudinally by a groove commencing at about half the length of the shell and extending to the front. Beak small, incurved, foramen minute, beak ridges strongly marked. Surface of valves smooth. In the interior of the dorsal valve, under the hinge-plate, a slightly elevated longitudinal septum or ridge extends to within a short distance of the frontal margin. To the hinge-plate are attached the principal stems of the loop, which, after giving off crural processes, extend to within a short distance of the front, where they become reflected so as to form the loop.

On New Brachiopoda, and on the Development of the Loop in Terebratella

Shell inequivalve; punctuate, rather rugose, front deep, rounded; attached by a considerable portion of the ventral valve; beak slightly incurved; deltidium small and depressed. The ventral valve is flattened on its under side. Its interior is surrounded by an elevated, slightly granulated margin. Under the deltidium are seen two raised oval processes, separated by a longitudinal septum, which occupies the greater length of the shell. The exterior of the dorsal valve is rugose and flattened. The interior possesses a narrow, thin, punctuated margin, immediately succeeding which is a ridge of single granulations, which are stronger towards the frontal margin, gradually disappearing as the ridge passes upwards. Springing from the centre of this granulated ridge is a septum, slightly tapering from its base, on either side strongly serrated, between which is a central longitudinal groove. The septum occupies nearly the whole height allowed by the cavity of the shell, and divides it to nearly three-fourths of its length. From the top of the septum there are thrown off two extremely delicate lamellæ, forming a loop which curves downwards towards the front of the shell, where they bifurcate, and are then again united to the shell at its inner sides. Above the septum and attached lamellæ a band occurs, forming a bridge over the visceral cavity. This is united to the granulated ridge, which thus completely surrounds the inner portion of the valve.