Dentigerous Equine Teratoma in a Stallion: Surgical Management and Clinicopathology

Teratoma is a rare germ cell testicular cancer composed of cells that are not normally present in the site where it originates. These tumors are rarely described in horses, where they may develop due to cryptorchidism. Teratomas consist of cells originating from different germinal layers, arising from germinal multi-potential cells with differentiation defects, and can simultaneously contain several tissues from two or more embryonic layers. Testicular teratomas are described in horses, cats, dogs, wild boars, bulls, and humans. In the rare descriptions found in literature of testicular teratoma in stallions, they occur frequently in cryptorchid testicles, as a consequence of congenital neoplasm. To our knowledge there is no other report of a dentigerous equine teratoma in a stallion. We describe here a successful laparoscopic removal of a testicular teratoma and its clinic-pathological features.

Nonepithelial Tumors and Tumor-like Lesions of the Skin and Subcutis in Children

This overview of mesenchymal tumors presenting in the skin and/or subcutis in children brings together the range of neoplasms and hamartomas which are seen in this age-group. It is not surprising from the perspective of the pediatric or general surgical pathologist that vascular anomalies, including true neoplasms and vascular malformations, are the common phenotypic category. Since there is considerable morphologic overlap among these lesions, clinicopathologic correlation may be more important than for many of the other mesenchymal tumors. The skin and subcutis are the most common sites of clinical presentation for the infantile myofibroma which is the most common of fibrous mesenchymal tumors in children. Several of the other mesenchymal tumors are more common adults-like dermatofibrosarcoma protuberans, but nonetheless have an important presence in children, even as a congenital neoplasm. A lipomatous tumor in a young child should be considered as a possible manifestation of an overgrowth syndrome.

A neglected case of Sacrococcygeal teratoma in a neonate

Sacrococcygeal teratoma (SCT), although rare, is the most common congenital neoplasm in neonates. A mass in the sacrococcygeal region at the time of birth is the usual presentation. Routine antenatal abdominal ultrasound of mother can detect almost all the cases. The prognosis is favorable when diagnosis is done antenatally and proper management is instituted soon after the baby is born. Presented herein a 2 days old neonate with a neglected SCT who died unfortunately due to massive bleeding from the tumor. A brief review of the literature has been presented to make everyone aware of the condition so that future recurrence of such sad events may be avoided.DOI: http://dx.doi.org/10.3126/ajms.v6i2.10448Asian Journal of Medical Sciences Vol.6(2) 2015 108-110

Cystic hygroma of the parotid gland

Cystic hygroma of the parotid gland is an uncommon benign congenital neoplasm that presents as an asymptomatic soft fluctuant mass. Cervical ultrasonography, computerized tomography (CT) and magnetic resonance imaging (MRI) are used to assess the size and extent of the lesion and to assist in planning the surgical approach. Ultrasonography may demonstrate a multilocular cystic mass containing septa of variable thicknesses. Extension of the mass into deeper structures is more accurately assessed by CT or MRI. A CT scan may show thin-walled cystic masses filled with material of density close to that of water. The use of contrast medium can demonstrate the relationship of the lesion to the surrounding structures. Magnetic resonance imaging is superior to CT in defining the nature and extent of the lesion.

Congenital Malignant Melanoma

A 6-week-old girl with congenital melanoma of the skin is reported and the literature is reviewed. We believe this to be the first case of congenital melanoma in a black infant who had no underlying giant melanocytic nevus. Because of the significant relationship between the early treatment and prognosis of malignant melanoma, we wish to alert pediatric clinicians to the existence of this rare congenital neoplasm.

Sacrococcygeal Teratoma in a Teen - A Case Report

Sacrococcygeal teratoma is a common congenital neoplasm. This tumor contains derivatives ofmore than one of the three embryonic germ cell layers e.g. ectoderm, mesoderm & endodermand usually arises as a mass in the sacrococcygeal region. Here we are reporting a case of hugesacrococcygeal teratoma presenting as a lower abdominal and perineal mass in a thirteen-yearoldschoolgirl, which is very rare.doi: 10.3329/taj.v16i2.3888TAJ December 2003; Vol.16(2): 76-78