Coccygeal glomus

Coccygeal glomus
Section of an irregular nodule of the glomus coccygeum. X 85. The section shows the fibrous covering of the nodule, the bloodvessels within it, and the epithelial cells of which it is constituted.
Details
Artery	Median sacral artery
Identifiers
Latin	glomus coccygeum
TA98	A12.2.12.011
TA2	3890
FMA	15649
Anatomical terminology [edit on Wikidata]

The coccygeal glomus (coccygeal gland or body; Luschka’s gland) is a vestigial structure^[1] placed in front of, or immediately below, the tip of the coccyx.

Anatomy

It is about 2.5 mm. in diameter and is irregularly oval in shape; several smaller nodules are found around or near the main mass.

It consists of irregular masses of round or polyhedral cells epitheloid cells, which are grouped around a dilated sinusoidal capillary vessel.

Each cell contains a large round or oval nucleus, the protoplasm surrounding which is clear, and is not stained by chromic salts. Since it is not stained by chromic salts, it is not truly a part of Chromafin system; viz. the system which includes cells stained by chromic salts, consisting of renal medulla, para ganglia, and para aortic bodies.

It is situated near the ganglion impar in pelvis, and also at the termination of median sacral artery.

Clinical significance

It may appear similar to a glomus tumor.^[2]

References

This article incorporates text in the public domain from page 1281 of the 20th edition of Gray's Anatomy (1918)

1. Rahemtullah A, Szyfelbein K, Zembowicz A (2005). "Glomus coccygeum: report of a case and review of the literature". Am J Dermatopathol. 27 (6): 497–9. doi:10.1097/01.dad.0000149079.70872.a7. PMID 16314705. S2CID 32243951.
2. Santos L, Chow C, Kennerson A (2002). "Glomus coccygeum may mimic glomus tumour". Pathology. 34 (4): 339–43. doi:10.1080/003130202760120508. PMID 12190292. S2CID 8539584.