author(s)
K Raja, S Ushakumary, TA Kannan, S Rajathi and Geetha Ramesh

abstract
Glycogen body (Corpus gelatinosum) was observed in the lumbosacral region (Synsacrum) as oval shaped transparent jelly like structure. It was observed in the rhomboid sinus of the spinal cord at the level of L4 –S2 region. Histologically, glycogen body divided into dorsal and ventral parts. The ventral part enclosed the central canal of the spinal cord. Dorsal part of the glycogen body was highly vascularised in the central portion and no connective tissues were detected except in the vicinity of blood vessels. The cells of the glycogen body in the dorsal part were closely packed with irregular polygonal cells. In the ventral part, cells were loosely arranged. Cells of Glycogen body showed moderate PAS positive reaction. However, high PAS positive reaction was observed in the periphery of the cells in the cytoplasm with peripherally located basophilic nucleus.There were a series of comparatively very small and less conspicuous accessory lobes of Lachi.