histoid


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histoid

 [his´toid]
1. developed from one kind of tissue.
2. resembling one of the tissues of the body.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

his·toid

(his'toyd),
1. Resembling in structure one of the tissues of the body.
2. Sometimes used with reference to the histologic structure of a neoplasm derived from and consisting of a single, relatively simple type of neoplastic tissue that closely resembles the normal, as in certain fibromas and leiomyomas.
Synonym(s): histioid
[histo- + G. eidos, resemblance]
Farlex Partner Medical Dictionary © Farlex 2012

his·toid

(his'toyd)
1. Resembling in structure one of the tissues of the body.
2. The histologic structure of a neoplasm derived from and consisting of a single, relatively simple type of neoplastic tissue that closely resembles the normal.
[histo- + G. eidos, resemblance]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
There were also two patients with histoid leprosy and four patients with pure neuritic leprosy.
However, histopathological findings were of histoid leprosy with 6 + bacillary index (BI) (Figure 2); hence, diagnosis of histoid leprosy was made.
All cases of BLHD, LLHD and histoid Hansen's showed 100% positivity.
HL was originally described as a manifestation of drug resistance after irregular or inadequate treatment with dapsone monotherapy or multi-drug therapy, but histoid nodules may appear also de novo representing the first manifestation of lepromatous leprosy (LL).
In LL, grenz zone with pan dermal infiltrate was seen in 100% cases, while histoid leprosy showed spindle-shaped tumor-like infiltrate of histiocytes forming whorls and/or interlacing bands in the dermis.
Therefore, the diagnosis of histoid type lepromatous leprosy was made and confirmed based on clinical and histopathological findings.
A clinical diagnosis of HD-Indeterminate was made in 3 patients (6.7%), HD-TT in 1 patient (2.2%), HD-BT in 28 patients (62.2%), HD-BL in 5 patients (11.1%), HD-LL in 7 patients (15.6%) and Histoid leprosy in 1 patient (2.2%).
The uncommon disease presentations include localized lepromatous disease presenting with single nodule or localized area of papules and nodules, histoid leprosy, lucio leprosy and spontaneous ulcerations seen in long-standing untreated lepromatous leprosy.
Many drugs like antitubercular, antibiotics, steroids, dapsone and vitamins have variable efficacy.2 The condition has to be differentiated from similar clinical entities like acne, lupus vulgaris, granulomatous rosacea, sarcoidosis and histoid leprosy.
Out of all the patients of LL, 2 patients were diagnosed having histoid leprosy.
(11,14) It has also been pointed out that cases of histoid leprosy (a rare and often unrecognised form of MB disease) can act as a reservoir.
He was diagnosed as histoid leprosy on histopathology.