Difference between revisions of "Dermatopathic lymphadenopathy"
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{{ Infobox diagnosis | |||
| Name = {{PAGENAME}} | |||
| Image = Dermatopathic_lymphadenopathy_-_high_mag.jpg | |||
| Width = | |||
| Caption = Dermatopathic lymphadenopathy. [[H&E stain]]. | |||
| Micro = | |||
| Subtypes = | |||
| LMDDx = [[malignant melanoma]], [[sinus histiocytosis]] | |||
| Stains = | |||
| IHC = | |||
| EM = | |||
| Molecular = | |||
| IF = | |||
| Gross = | |||
| Grossing = | |||
| Site = [[lymph node]] - see ''[[lymph node pathology]]'' | |||
| Assdx = T-cell lymphoma | |||
| Syndromes = | |||
| Clinicalhx = | |||
| Signs = enlarged lymph node | |||
| Symptoms = | |||
| Prevalence = uncommon | |||
| Bloodwork = | |||
| Rads = | |||
| Endoscopy = | |||
| Prognosis = benign | |||
| Other = | |||
| ClinDDx = other cause of lymphadenopathy | |||
}} | |||
'''Dermatopathic lymphadenopathy''', abbreviated '''DL''', is a rare [[lymph node pathology|pathology of the lymph nodes]]. | '''Dermatopathic lymphadenopathy''', abbreviated '''DL''', is a rare [[lymph node pathology|pathology of the lymph nodes]]. | ||
Revision as of 03:44, 10 December 2013
| Dermatopathic lymphadenopathy | |
|---|---|
| Diagnosis in short | |
 Dermatopathic lymphadenopathy. H&E stain. | |
| LM DDx | malignant melanoma, sinus histiocytosis |
| Site | lymph node - see lymph node pathology |
|
| |
| Associated Dx | T-cell lymphoma |
| Signs | enlarged lymph node |
| Prevalence | uncommon |
| Prognosis | benign |
| Clin. DDx | other cause of lymphadenopathy |
Dermatopathic lymphadenopathy, abbreviated DL, is a rare pathology of the lymph nodes.
General
Microscopic
Features:[5]
- Abundant histiocytes & special histiocytes - in loose irregular clusters - located in the sinuses, i.e. sinus histiocytosis - key feature:
- Do not form granuloma; may be similar to toxoplasma.
- Plasma cells (medulla).
- Eosinophils.
Histiocytes & special histiocytes:
- Histiocytes:
- +/-Melanin pigment key feature (if present).
- Lipid-laden macrophages.
- Interdigitating dendritic cells:
- Need IHC to identify definitively.
- Langerhans cells:
- Classically have a kidney bean nuclei.
- Need IHC to identify definitively.
DDx:
- Metastatic malignant melanoma - (melanin) pigmented cells have nuclear atypia, not histiocytes.
- Sinus histiocytosis - no cells with melanin.
Images
DL - very low mag. (WC)
DL - low mag. (WC)
DL - intermed. mag. (WC)
DL - high mag. (WC)
DL - very high mag. (WC)
IHC
- Interdigitating dendritic cells: S100 +ve, CD1a -ve.
- Langerhans cells: S100 +ve, CD1a +ve.
See also
References
- ↑ Gould, E.; Porto, R.; Albores-Saavedra, J.; Ibe, MJ. (Nov 1988). "Dermatopathic lymphadenitis. The spectrum and significance of its morphologic features.". Arch Pathol Lab Med 112 (11): 1145-50. PMID 3178430.
- ↑ Westhoff, TH.; Loddenkemper, C.; Hörl, MP.; Schmidt, S.; Anagnostopoulos, I.; Hummel, M.; Zidek, W.; van der Giet, M. (Dec 2006). "Dermatopathic lymphadenopathy: a differential diagnosis of enlarged lymph nodes in uremic pruritus.". Clin Nephrol 66 (6): 472-5. PMID 17176922.
- ↑ Cooper, RA.; Dawson, PJ.; Rambo, ON. (Mar 1967). "Dermatopathic lymphadenopathy a clinicopathologic analysis of lymph node biopsy over a fifteen-year period.". Calif Med 106 (3): 170-5. PMID 5341844.
- ↑ Kojima, M.; Nakamura, S.; Itoh, H.; Yamane, Y.; Shimizu, K.; Murayama, K.; Ohno, Y.; Tanaka, H. et al. (Apr 2004). "Clinical implication of dermatopathic lymphadenopathy among Japanese: a report of 19 cases.". Int J Surg Pathol 12 (2): 127-32. PMID 15173917.
- ↑ Ioachim, Harry L; Medeiros, L. Jeffrey (2008). Ioachim's Lymph Node Pathology (4th ed.). Lippincott Williams & Wilkins. pp. 226. ISBN 978-0781775960.