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A calculus in a vein.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a calculus in a vein formed as a result of the invasion of a thrombus, or blood clot, by connective tissue and the deposition therein of calcium salts. The formation of a phlebolith is associated with thrombophlebitis, usually of a varicose vein. The presence of a phlebolith is asymptomatic; a phlebolith of a deep vein is usually detected by roentgenography. A phlebolith does not require treatment.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Also, an enhancing vessel was noted within the periphery of the mass, but no evidence of salivary stones or phleboliths was seen.
Five out of seven patients (71%) had evidence on examination and imaging of phleboliths within the mass.
Assessment of the clinical utility of the rim and comet-tail signs in differentiating ureteral stones from phleboliths. AJR 2001; 177: 1285-291.
Plain films help to differentiate between phleboliths and calculi by showing a radiolucent centre in 66% cases.
(3-4) In our patient the calcified lesion represented phleboliths often seen in venous malformations.
Vascular lesion of the masseter presenting with phlebolith. Otolaryngol Head Neck Surg 1999;120(4):545-8.
DISCUSSION: Hemangioma with phlebolith of the parotid and submandibular glands are frequently seen but hemangioma with phlebolith in the floor of the mouth is rarely entity.
Some patients may also complain of tender cord like structure in the floor of the mouth due to phleboliths. They are seldom misdiagnosed as chronic sialadenitis with sialolith.
* Venous malformations (VMs): These compressible lesions are composed of malformed venous channels with sluggish internal blood flow and are often associated with focal areas of thrombosis that result in the characteristic phleboliths. Head and neck VMs involve both superficial and deep tissues and are often trans-spatial, with a predilection for the muscles of mastication (Figure 4).
The cavernous spaces may contain calcified thrombi, referred to as phleboliths. Between the dilated vascular spaces, there is proliferation of spindle cells composed of endothelial cells, pericytes, and fibroblasts.
As other calcifications can appear in the same region of atheroma on panoramic radiograph, which may be anatomic (hyoid bone, cartilage triticeous, epiglottis, etc.) or pathologic (calcified lymph nodes, tonsilloliths, phleboliths, etc.) (3), it is necessary another radiographic (AP) or exam for the diagnosis to be confirmed.
(11) By definition, these multiple enchondromas are associated with soft tissue swelling and calcifications and phleboliths, which are typical of hemangiomas.