Case Report: A 39-year-old male patient presented with a
short history of headache and right 6th and 7th nerve palsies. A computed
tomography (CT) scan and magnetic resonance imaging (MRI) of the brain showed
a ring-enhanced lesion on the right fronto-temporal area surrounded by oedema
and causing mid-line shift (Fig. 1). This was initially thought to represent
a tuberculoma but it progressed on anti-tuberculous therapy. Accordingly,
the patient underwent a craniotomy with total excision of the mass, which
by histological examination proved to be a primary LCH. A partially necrotic
lesion was seen, composed of Langerhan's-type histiocytes with typical,
convoluted nuclei and prominent nucleoli surrounded by heavy, chronic, inflammatory
cell infiltration (Fig. 2). The Langerhan's-type histiocytes showed diffuse
positivity with S-100 immunostain. T-cell-rich inflammatory infiltration
was documented by CD3 stain, and L-26 stain demonstrated B cells in the
surrounding brain parenchyma. The patient was given a course of radiotherapy
(1600 cGy) which was thought to be adequate for primary LCH. Follow-up MRI
(Fig. 3) three months later showed recurrence of the lesion and so a repeat
craniotomy was performed, when total removal of the lesion was again achieved.
The recurrent mass had identical histological features on histological examination
to the initial lesion.
The patient did well for one month post-operatively. He then started to
have symptoms and signs of increased ICP and repeat CT and MRI scans of
the brain showed further recurrence Fig. 4). The patient was treated conservatively
but his condition deteriorated. He became drowsy and then comatose and finally
died.
|
Figure 1
|
| Figure
1– Brain MRI study, T1-weighted
SE image after IV injection of gadolinium shows a ring enhancing
lesion in the right temporal lobe, surrounded by brain oedema
and associated with midline shift to the left. |
|
|
Figure 2
|
| Figure
2– Photomicrograph of paraffin
section showing sheets of large histiocytes with pale cytoplasm
and convoluted nuclei mixed with areas of necrosis and mononuclear
cell infiltrate. H&E, original magnification x 400 |
|
|
Figure 3
|
| Figure
3– Brain MRI study, T1-weighted
SE image after IV injection of gadolinium shows a ring-enhancing
lesion surrounded by oedema and minimal midline shift to the
left |
|
|
Figure 4
|
| Figure
4– Brain MRI study, T1-weighted
SE image after IV injection of gadolinium shows recurrence of
lesion involving both anterior horns of the lateral ventricles,
brain oedema and midline shift |
|
Table
1 – Cases with non-fatal outcome
|
No.
|
Age/Year
|
Sex
|
Symptoms
|
Location of Tumour
|
Treatment
|
Follow-up
|
Reference
|
|
1
|
9
|
Male
|
Intracranial Hypertension
|
Left temporal
|
Resection Radiation
|
1.5 years
|
Sivalingam, et al
1977
|
|
2
|
35
|
Male
|
Seizures
|
Left frontal
|
Resection
|
2 years
|
Cerda, Nicolas, et al
1980
|
|
3
|
14
|
Male
|
Intracranial Hypertension
|
Left temporal
|
Total resection
|
2 years
|
Greenwood, et al
1982
|
|
4
|
30
|
Male
|
Seizures
|
Left fronto-temporal
|
Resection
|
9 months
|
Mascinski, Kleinschmidt, DeMasters,
1985
|
|
5
|
19
|
Male
|
Headaches
|
Left temporal
|
Resection
|
16 months
|
Hammar, et al
1986
|
|
6
|
26
|
Male
|
Headaches
Seizures
|
Left frontal
|
Resection
|
5 months
|
Penar, et al
1987
|
|
7
|
31
|
Female
|
Seizures
|
Left parieto-occipital
|
Subtotal Resection Radiation
|
6 months
|
Eriken, et al
1988
|
|
8
|
7
|
Male
|
Seizures
|
Right frontal
|
Total resection
|
2 years
|
Itol, et al
1992
|
|
9
|
37
|
Male
|
Seizures
|
Right temporal
|
Gross total excision
|
6 months
|
Montine, et al
|
Table
2– Cases with fatal outcome
|
No.
|
Age/Year
|
Sex
|
Symptoms
|
Location of Tumour
|
Treatment
|
Follow-up
|
Reference
|
|
1
|
34
|
Female
|
Headaches
Vomiting
Memory
|
Left temporal
thalamus
|
Partial excision
|
1.5 years
|
Daniel SE, et al
1985
|
|
2
|
63
|
Female
|
Slurred speech
Right hand
weakness
|
Pituitary gland
Infundibulum
Mid-brain
|
Conservative
|
1 year
|
Breidahl WH, et al
1992
|
|
3
|
39
|
Female
|
Left hemiparesis
Amenorrhoea
D.I.
|
Right parietal
lobe
Hypothalamus
|
Radiation
|
7 years
|
Breidahl WH, et al
1992
|
|
4
|
6
|
Male
|
Headaches
Vomiting
Seizures
|
Choroid plexus
|
Partial excision
Radiation
Chemotherapy
|
2 months
|
Kim Eun-Young, et al
1995
|
|
5
|
32
|
Female
|
Intracranial
hypertension
|
Right insula
|
Total excision
Radiation
Chemotherapy
|
7 months
|
Enne Vital, et al
1996
|
|
Isolated involvement of the CNS by LCH without conspicuous systemic lesions
is uncommon and its clinical course varies from a benign course which responds
to total surgical excision to a very malignant course, which does not respond
to any treatment modality and the patient dies within a few months, as in
our case. Langerhan's cell histiocytosis, previously known as histiocytosis
X, is diagnosed histologically either by immunohistochemical evidence of
CD1a expression or by ultrastructural detection of Birbeck granules in the
cytoplasm.1,3 In 1893, Hand reported the involvement of the hypothalamic-posterior
pituitary axis as an important manifestation of LCH.10 On CT scan, cerebral
lesions are typically hypodense with surrounding oedema and mass effect,
which with contrast enhances either uniformly or peripherally. This may
be confused radiologically with the diagnosis of tuberculoma, as in our
case, or glioma.5,7,8 On MRI the lesion is usually iso- or hypointense relative
to brain on T1- and most commonly hyperintense relative to brain on T2-weighted
image. The contrast enhancement is variable.6,11
To our knowledge, only 14 cases have been reported. The patients' age ranged
from 6-63 years. By reviewing the literature we were able to divide the
patients into two groups according to the final outcome. The first group
(Table 1) consists of 9 patients resulting in good outcome, the majority
were males (ratio 8:1) and the lesion was mostly single involving the cerebral
hemisphere. The second group (Table 2) consists of 6 patients including
our patient; all of them resulting in death, the majority were females (ratio
4:2) and the lesion was mostly multifocal and affected a critical structure
such as the pituitary gland, thalamus, hypothalamus and brain stem. The
clinical manifestation is variable. All patients except two had surgical
treatment which ranged from partial to total excision, 7 patients had radiotherapy
and only two had chemotherapy. Despite the fact that our patients underwent
an initial gross total excision, postoperative radiotherapy was administered
based on anecdotal reports in the literature. Also, despite aggressive treatment,
the lesion recurred within three months. On review of cases in the literature
with fatal compared to non-fatal outcome, the role of radiotherapy remains
unclear. Based upon our literature review, we can conclude that LCH is not
any more considered to be a very rare disease nor does it always carry a
good prognosis. It has been noticed that the follow-up period for some of
the patients which have been claimed to have good outcome is rather short.4,12,13
The patient’s sex and location of the lesion are the two most important
predictors of the final outcome.
| 1. |
Ben-Ezra
JM, Koo CH: Langerhan's cell histiocytosis and malignancies of the
M-PIRE system. Am J Clin Pathol 1993, 99: 464-471 |
| 2. |
Bernard
JD, Aguilar MJ: Localized hypothalamic histiocytosis X. Report of
a case. Arch Neurol 1969, 20: 368-372 |
| 3. |
Emile
J-F, Wechsler J, Brousse N, Boulland ML, Cologon R, Fraitag S, Voisin
M-L, Gaular P, Boumsell K, Zafrani E-S: Langerhan's cell histiocytosis.
Definitive diagnosis with the use of monoclonal antibody 010 on
routinely paraffin-embedded samples. Am J Surg Pathol 1995, 19:
636-641 |
| 4. |
Eriksen
B, Jannis J, Variakojis D, Winter J, Russel E, Marder R, Dal Canto
M: Primary histiocytosis X of the parito-occiptal lobe. Hum Pathol
1988, 19: 611-614 |
| 5. |
Geoffray
A: Case of the season. Histiocytosis X of the central nervous system.
Semin Roentgenol 1984, 9: 257-258 |
| 6. |
George
JC, Edwards MK, Smith RR, Provisor AJ: MR of intracranial Langerhan's
cell histiocytosis. Case report. J Comput Assist Tomogr 1994, 18(2):
295-297 |
| 7. |
Goldberg
R, Han JS, Ganz E, Roessman V: Computed tomography demonstration
of multiple parenchymal central nervous system nodules due to histiocytosis
X. Surg Neurol 1987, 27: 377-380 |
| 8. |
Greenwood
SM, Martin JS, Towfighi J: Unifocal eosinophilic granuloma of the
temporal lobe. Surg Neurol 1982, 17: 441-444 |
| 9. |
Kepes
JJ, Kepes M: Predominantly cerebral forms of histiocytosis-X. A
reappraisal of “Gagel’s hypothalamic granuloma”, “granuloma infiltrates
of the hypothalamus” and “Ayala’s disease” with a report of four
cases. Acta Neuro Pathol 1969, 14: 77-98 |
| 10. |
Kepes
JJ: “Xanthomatous” lesions of the central nervous system: definition,
classification and some recent observations. Prog Neuro Pathol 1979,
4: 179-211 |
| 11. |
Kim
E-Y, Choi J-U, Kim T-S, Kim D-I, Kin K-Y: Huge Langerhan's cell
histiocytosis granuloma of choroid plexus in a child with Hand-Schuller-Christian
disease. Case report. J Neurosurg 1985, 83: 1080-1084 |
| 12. |
Montine
TJ, Hollensead SC, Ellis WG, Martin JS, Moffat EJ, Burger PC: Solitary
eosinoplic granuloma of the temporal lobe: a case report and long-term
follow-up of previously reported cases. Clin Neuro Pathol 1994,
13: 225-228 |
| 13. |
Penar
PL, Kim JH, Cyatte D: Solitary eosinophilic granuloma of frontal
lobe. Neurosurg 1987, 21: 566-568 |
| |
Vasogenic |
Cytotoxic |
Hydrocephalic |
| Pathogenesis |
Increased
capillary permeability |
Cellular
swelling-glial, neuronal, endothelial |
Increased
brain fluid due to block of CSF absorption |
| Location
of oedema |
Chiefly
white matter |
Gray
and white matter |
Chiefly
periventricular white matter |
| Oedema
fluid composition |
Plasma
filtrate, including plasma proteins
Increased |
Increased
intracellular water and sodium
Decrease |
CSF
Increased |
| Extracellular
fluid volume |
Increased |
Normal |
Normal |
| Capillary
permeability to large molecules (inulin) |
|
|
|
| Therapeutic
effects Stereoids |
Beneficial
in brain tumour and abscess |
Not
effective (possibly Reye's syndrome) |
Uncertain effectiveness (possibly pseudotumour |
| Osmotherapy |
Acutely reduces volume of normal brain tissue only |
Acutely
reduces brain volume in hypo- osmolality |
Rarely
useful |
| |
Improves
compliance |
Improves
compliance |
Improves
compliance |
| Acetazolamide |
?Effect |
No
direct effect |
Minor
usefulness |
| Furosemide |
?Effect |
No direct effect |
Minor usefulness |
| CSF = Cerebrospinal Fluid |
|