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[Introduction]
Thecal cyst usually appears around the joint, espe-cially on the dorsal side of the wrist joint. The main manifestations are painless, hard and small semispheroid lumps. The external membrane of the cyst is fibrous tis-sue and the internal membrane is white and slippery. The cyst is full of whitish colloidal liquid. Thecal cyst is similar to wrist tendon tumor in TCM due to stagnation of qi, ac-cumulation of fluid into phlegm and coagulation in the me-ridians.
[Syndrome differentiation]
Local pathological change is semispheroid lumps that are smooth in surface and bear no adhesion with the skin. The smaller ones are the size of soy beans and are hard in texture. The larger ones are the size of dove egges, ap-pears mobile under pressure. There is no pain, only occa-sional sense of aching, distension and weakness in exces-sive movement.
[Treatment]
Prescription: Local cyst.
Performance: The thick needle of No. 28 is used to puncture 1 cun vertically from the top of the lump and then puncture obliquely the four sides of the lump with ro-tating technique. The needle is retained for 15 minutes. When the needle is withdrawn, the needling hole is en-larged by swaying the needle. The needling hole is squeezed to press out colloidal liquid. After needling, the affected part is bandaged with pressure for 3 - 5 days.
