Difference between revisions of "Bizarre parosteal osteochondromatous proliferation"

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| Synonyms  =Nora lesion
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| Site      =Hands, feet
| Site      = hands, feet
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| Prevalence = rare
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'''Bizarre parosteal osteochondromatous proliferation''', also '''Nora lesion''', is a distinctive rare lesion of the hand or foot.<ref name=pmid19057740>{{Cite journal  | last1 = Gruber | first1 = G. | last2 = Giessauf | first2 = C. | last3 = Leithner | first3 = A. | last4 = Zacherl | first4 = M. | last5 = Clar | first5 = H. | last6 = Bodo | first6 = K. | last7 = Windhager | first7 = R. | title = Bizarre parosteal osteochondromatous proliferation (Nora lesion): a report of 3 cases and a review of the literature. | journal = Can J Surg | volume = 51 | issue = 6 | pages = 486-9 | month = Dec | year = 2008 | doi =  | PMID = 19057740 }}</ref>


==General==  
==General==  
A distinctive osteochondromatous proliferation of hands and feet.
A distinctive osteochondromatous proliferation of hands and feet.


==Population==
Population:
*Young adults
*Young adults.
*20s-30s
*Typically age (years) 20s and 30s.<ref name=pmid19057740/>


==Location==
==Location==
Line 42: Line 43:


==Radiology==
==Radiology==
Marginated wide based bony growth projecting into the soft tissues<ref>http://radiopaedia.org/articles/bizarre-parosteal-osteochondromatous-proliferation</ref>
*Marginated wide based bony growth projecting into the soft tissues.<ref>http://radiopaedia.org/articles/bizarre-parosteal-osteochondromatous-proliferation</ref>


==Gross==  
==Gross==  
*Nodule covered with glistening cartilage
*Nodule covered with glistening cartilage.


==Microscopic==
==Microscopic==
Disorganized cellular cartilage with a blue tint and patchy ossification matures into disorganized bone.  A proliferation of fibroblasts surrounds the lesion and occupies intertrabecular spaces.
Disorganized cellular cartilage with a blue tint and patchy ossification matures into disorganized bone.  A proliferation of fibroblasts surrounds the lesion and occupies intertrabecular spaces.


==Images==
DDx:
Image:[[File:Bone BizzareParostealOsteochondromatousProliferation PA (2).JPG|thumb|Notice the disorganized blue tinted cartilage with partial ossification merging into mature bone.]]
*Periosteal [[chondrosarcoma]].
Image:[[File:Bone BizzareParostealOsteochondromatousProliferation PA.JPG|thumb|A loose proliferation of fibroblasts fills the spaces between the bony trabeculae.]]
*Periosteal [[chondroma]].
*Low grade parosteal [[osteosarcoma]].
*[[Osteochondroma]].
 
===Images===
<gallery>
Image:Bone BizzareParostealOsteochondromatousProliferation PA (2).JPG |Notice the disorganized blue tinted cartilage with partial ossification merging into mature bone.
Image:Bone BizzareParostealOsteochondromatousProliferation PA.JPG |A loose proliferation of fibroblasts fills the spaces between the bony trabeculae.
</gallery>
*BPOP[http://www.webpathology.com/images/noimage.gif]
*BPOP[http://www.webpathology.com/images/noimage.gif]
*BPOP[http://webpathology.com/images/noimage.gif]
*BPOP[http://webpathology.com/images/noimage.gif]
*BPOP[http://www.webpathology.com/images/noimage.gif]
*BPOP[http://www.webpathology.com/images/noimage.gif]
*BPOP[http://pathologyoutlines.com/wick/bizarre%20parosteal%20osteochondromatous%20proliferation%20(bpop-%20no.jpg]
*BPOP[http://pathologyoutlines.com/wick/bizarre%20parosteal%20osteochondromatous%20proliferation%20(bpop-%20no.jpg]
==DDX==
*Periosteal chondrosarcoma
*Periosteal chondroma
*Low grade parosteal osteosarcoma
*Osteochondroma


==Diangostic categories==
==Diangostic categories==
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==Molecular==
==Molecular==
t(1:17)(q32;q21)<ref>{{Cite journal  | last1 = Kuruvilla | first1 = S. | last2 = Marco | first2 = R. | last3 = Raymond | first3 = AK. | last4 = Al-Ibraheemi | first4 = A. | last5 = Tatevian | first5 = N. | title = BizarreParosteal Osteochondromatous Proliferation (Nora's lesion) with translocation t(1;17)(q32;q21): a case report and role of cytogenetic studies on diagnosis. | journal = Ann Clin Lab Sci | volume = 41 | issue = 3 | pages = 285-7 | month =  | year = 2011 | doi =  | PMID = 22075515 }}
t(1:17)(q32;q21)<ref>{{Cite journal  | last1 = Kuruvilla | first1 = S. | last2 = Marco | first2 = R. | last3 = Raymond | first3 = AK. | last4 = Al-Ibraheemi | first4 = A. | last5 = Tatevian | first5 = N. | title = BizarreParosteal Osteochondromatous Proliferation (Nora's lesion) with translocation t(1;17)(q32;q21): a case report and role of cytogenetic studies on diagnosis. | journal = Ann Clin Lab Sci | volume = 41 | issue = 3 | pages = 285-7 | month =  | year = 2011 | doi =  | PMID = 22075515 }}</ref>
</ref>


==Sign out==
==Sign out==
Line 85: Line 87:
==References==
==References==
{{Reflist|1}}
{{Reflist|1}}
[[Category:Diagnosis]]

Revision as of 15:06, 17 October 2014

Bizarre parosteal osteochondromatous proliferation
Diagnosis in short

Synonyms Nora lesion
Site hands, feet

Prevalence rare

Bizarre parosteal osteochondromatous proliferation, also Nora lesion, is a distinctive rare lesion of the hand or foot.[1]

General

A distinctive osteochondromatous proliferation of hands and feet.

Population:

  • Young adults.
  • Typically age (years) 20s and 30s.[1]

Location

Hands and feet

Radiology

  • Marginated wide based bony growth projecting into the soft tissues.[2]

Gross

  • Nodule covered with glistening cartilage.

Microscopic

Disorganized cellular cartilage with a blue tint and patchy ossification matures into disorganized bone. A proliferation of fibroblasts surrounds the lesion and occupies intertrabecular spaces.

DDx:

Images

Diangostic categories

  • Cartilaginous neoplasms
  • Osteocartilaginous neoplasms

Molecular

t(1:17)(q32;q21)[3]

Sign out

  • BIZARRE PAROSTEAL OSTEOCHONDROMATOUS PROLIFERATION (NORA LESION).
  • APPROPRIATE MARGIN STATEMENT.

Prognosis

  • Benign
  • Locally aggressive

See also

  • Pathology Outlines[5]

References

  1. 1.0 1.1 Gruber, G.; Giessauf, C.; Leithner, A.; Zacherl, M.; Clar, H.; Bodo, K.; Windhager, R. (Dec 2008). "Bizarre parosteal osteochondromatous proliferation (Nora lesion): a report of 3 cases and a review of the literature.". Can J Surg 51 (6): 486-9. PMID 19057740.
  2. http://radiopaedia.org/articles/bizarre-parosteal-osteochondromatous-proliferation
  3. Kuruvilla, S.; Marco, R.; Raymond, AK.; Al-Ibraheemi, A.; Tatevian, N. (2011). "BizarreParosteal Osteochondromatous Proliferation (Nora's lesion) with translocation t(1;17)(q32;q21): a case report and role of cytogenetic studies on diagnosis.". Ann Clin Lab Sci 41 (3): 285-7. PMID 22075515.