A pilonidal cyst is a painful lump located at the base of the spine at the top of the buttocks. Symptoms can include a ...

Also known as a pilonidal cyst, the condition forms when a sac of tissue fills with air or fluid in the crease of your buttocks. Pilonidal cyst, doctors say, is mostly caused by a skin infection.

Read at the annual meeting of the New England Surgical Society, Salem, September 29, 1939. Select the format you want to export the citation of this publication.

The Lahey Clinic, Boston, Mass. Cattell — Surgeon, Lahey Clinic. Stoller — Formerly Assistant in Surgery, Lahey Clinic. For records and addresses of authors see "This Week's Issue," page 132. Select ...