botryoid


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botryoid

[′bä·trē‚ȯid]
(geology)
A mineral formation shaped like a bunch of grapes.
Specifically, such a formation of calcium carbonate occurring in a cave. Also known as clusterite.
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References in periodicals archive ?
Botryoid odontogenic cyst is an unusual and rare type of odontogenic cyst.
Patients were included in this analysis if they had a diagnosis of embryonal histology (including botryoid and spindle cell variants) and were eligible for and treated in one of these studies (N = 2192).
DC, dentigerous cyst; KOC, keratinizing odontogenic cyst; GC, gingival cyst; BOC, botryoid odontogenic cyst; LPC, lateral periodontal cyst; RadC, radicular cyst; and ResC, residual cyst.
21-26) On histologic examination, lymphocyte depletion and the presence of characteristic intracytoplasmic botryoid inclusion bodies within lymphoid tissues, commonly in macrophages and particularly in the bursa of Fabricius, have frequently been reported either singly or together in infected birds.
Clinical symptomatology of Botryoid odontogenic cysts can vary from lesions that are asymptomatic to lesions that are exceedingly painful.
The differential diagnoses ranges from benign tumors such as myxolipoma, myxoid neurofibroma and myxoid leiomyoma to myxofibrosarcoma, myxoid variant of liposarcoma, leiomyosarcoma, malignant fibrous histiocytoma and botryoid rhabdomyosarcoma.
49,50) The botryoid type of embryonal RMS represents approximately 2% of head and neck RMSs.
Single case reports of leiomyosarcoma, botryoid rhabdomyosarcoma, angiosarcoma, and Kaposi sarcoma have been described.
It forms botryoids and crusts that range in color from pale yellow-green to tan, brick-red and chocolate-brown.
Microhenn cortices are dominated by fans or botryoids of coarse, inclusion-rich spar, but they also contain microspar, renalcid species A, well-defined peloids, and peloids with diffuse boundaries (grumose structure).
But this is one excellent lot, with miniature to small cabinet-size basalt matrix pieces whose open cavities harbor smooth white, pinkish and greenish pectolite botryoids averaging 1 cm in diameter; natrolite as jumbled groups of white, terminated crystals to 2 cm, these sparkling all over with apophyllite microcrystals and looking (my daughter says) "Christmassy"; lustrous, colorless, transparent, blocky crystals of apophyllite to 1.
At Tamdrost, dark violet, velvety-looking botryoids of cobaltkoritnigite to 1 mm occur in cavities in weathered, erythrite-rich skutterudite.