Significance
Kerala state depends on migrant workers for the various jobs needed. The dependence on Migrant labourers in Kerala is found mainly in the field of construction. The city of Kollam and other places like Punalur, Paravur in Kollam district, Perumbavoor, Thrissur etc. are slowly becoming overwhelmed with a number of migrants from North India. The migrant labours in places like Kollam have started scoring top marks in literacy equivalent examination. So an institute for developing the unskilled domestic labours as well as migrant labourers has become an essential need in Kerala. The main aim behind this institute is to train masons to upgrade their skills and get a certification from the Britain-based organisation City and Guilds.The flagship project of KASE is the Centre of Excellence in Construction and Infrastructure by the name Indian Institute of Infrastructure and Construction (IIIC). Established in a 9-acre state-of the-art campus at Chavara, Kollam District, Kerala, the objectives of IIIC are broadly to:

Establish a world class Skill Centre, as centre of excellence, for imparting international quality skill sets to the personnel in construction industry of all cadres, right from the labourers to the top managerial personnel under three major categories viz., technician, supervisory and managerial categories. Maximize the reach of the Skill Centre in terms of capacity intake as well as sub sectors covered and the area of reach.
It is seen protruding into the amniotic cavity near the insertion of the cord. Doppler examination shows anechoic cystic areas, with pulsatile flow in spectral analysis. Some chorioangiomas may be solid masses, and may not be identifiable in gray-scale imaging. Therefore, the investigation of choice is Colour Doppler, which also distinguishes it from placental hematoma.They can also be detected with MRI.Histologically, chorioangiomas consist of abundant vascular channels and may be cellular. Management
Expectant management is recommended for chorioangioma as majority of them are asymptomatic. Large tumors are monitored with ultrasonogram every 1–2 weeks. In case of maternal or foetal complications, possible interventions are serial foetal transfusions, fetoscopic laser coagulation of vessels supplying the tumor, endoscopic surgical devascularization and chemosclerosis using absolute alcohol. Prognosis
Large chorioangiomas with decreased echogenicity, decreased tumor volume and decreased blood flow in colour doppler images are may undergo spontaneous infarction. When chorioangiomas have deceased blood flow, fetal hemodynamics and clinical outcome are found to be improved. Epidemiology
It is the most common tumor of the placenta. Chorioangiomas over the size of 5 cm in diameter are rare, and occur at a rate of 1:3500 to 1:16,000 births. Smaller chorioangiomas are more frequent, with an incidence of 14‑139:10,000 births. However, many small chorioangiomas may not be sonologically visible and hence go unreported. In a clinical study, more than half of all tumors were discovered only by histological techniques. History
Chorioangioma was first described by Clarke in 1798. See also
Hemangioma
Chorangiosis

References
External links
Chorangioma (pathweb.uchc.edu)
Chorangioma (humpath.com)