mesodermal

14th week gestational age, the uterus was visible as longitudinal white mesodermal thickening in the midline of the false pelvis, ovary measures 6 mm and uterus measures 9 mm, ratio being 0.67.

Hydrozoans have a specific layer called the entocodon, from which striated muscle is produced independently of both the endoderm and the ectoderm (Boelsterli, 1977); it should therefore be considered mesodermal (Seipel and Schmid, 2005, 2006).

They show plasticity with their ability to differentiate into tissues of mesodermal, endodermal, and ectodermal origin, including skin.7,8 Bone marrow transplantation as one of kind of stem cells therapy initially was used in conditions like leukemias, lymphomas, other hemoglobinopathies etc.

Carcinosarcoma of the urinary bladder has been reported as multiple terms such as sarcomatoid carcinoma, malignant mesodermal mixed tumor, spindle cell carcinoma, and giant cell carcinoma [7].

It consists of 6 pairs of mesodermal arches lying in the transverse plane of the neck, numbered from the cranial to caudal direction.

Type II anomalies are ectodermal and mesodermal in origin and arise from the duplication of the membranous and cartilaginous external auditory canal [2].

Type II lesions present as a cyst, sinus, fistula, or any combination and are of ectodermal and mesodermal origin, containing either skin appendages or cartilage [4, 5].

The differential diagnosis of retroperitoneal schwannoma includes paraganglioma, neurofibroma, ganglioneuroma, tumors of mesodermal origin and retroperitoneal malignancies (malignant fibrous histiocytoma, lymphoma and liposarcoma) (3).

Cleft of primary palate is caused by the failure of adequate mesodermal migration or proliferation.

Moreover, mixed mesodermal tumors, commonly called carcinosarcoma, another manifestation of chondrosarcoma, are the most common heterologous sarcomas, originating from the uterus in most cases.

During fetal development, the mammalian eye anterior chamber is partly occupied by the mesodermal tissue supported by primitive blood vessels composed of fine hyaline fibers and conjunctival cells.

Rubinstein (8) stated that PSEL arises from the lymphatic tissue present in the epidural space and proposed that mesodermal cells lining the epidural space may give rise to primary spinal lymphoma under appropriate conditions.

Therefore, we propose cancers of ectodermal, mesodermal, and endodermal origins.

The occurrence of branchial, pulmonary, cardiovascular, gastrointestinal, urogenital, and skeletal malformations constitutes the axial mesodermal dysplasia complex (AMDC).