Introduction: “Human tail” is a congenital, benign anomaly in which a protrusion in the lumbosacrococcygeal caudal region is covered with skin. Arteriovenous hemangioma is a benign vascular lesion that may be congenital or acquired. We present a case in which a human tail was present with pathological findings of arteriovenous hemangioma. Case Report: A 6-month-old girl was born with a curved tail-shaped protrusion along her waistline. The distal portion was purple and had a solid consistency; the proximal portion was of normal skin color and had a soft consistency. No other abnormality was observed in the spinal area. Microscopic examination revealed congested, proliferated vascular structures in the fibrous stroma distally located under the multilayered squamous epithelium. In the proximal area, mature lipomatous tissue was observed. The lesion was diagnosed as arteriovenous hemangioma. Conclusion: Our patient presented with the classic “human tail” appearance at an early age and in the lumbosacral region. Because of the pathological findings, surgery for the congenital anomaly had to be performed with extra caution.

1.
Giri
PJ
,
Chavan
VS
.
Human tail. A benign condition hidden out of social stigma and shame in young adult: a case report and review
.
Asian J Neurosurg
.
2019 Jan
;
14
(
1
):
1
4
.
2.
Donovan
DJ
,
Pedersen
RC
.
Human tail with noncontiguous intraspinal lipoma and spinal cord tethering: case report and embryologic discussion
.
Pediatr Neurosurg
.
2005
;
41
(
1
):
35
40
. .
3.
Cai
C
,
Shi
O
,
Shen
C
.
Surgical treatment of a patient with human tail and multiple abnormalities of the spinal cord and column
.
Adv Orthop
.
2011
;
2011
:
153797
. .
4.
Dao
AH
,
Netsky
MG
.
Human tails and pseudotails
.
Hum Pathol
.
1984 May
;
15
(
5
):
449
53
. .
5.
Girard
C
,
Graham
JH
,
Johnson
WC
.
Arteriovenous hemangioma (arteriovenous shunt): a clinicopathological and histochemical study
.
J Cutan Pathol
.
1974 Apr
;
1
:
73
87
.
6.
Kim
CH
,
Kim
WY
,
Shin
JE
,
Kim
YW
.
Arteriovenous hemangioma of the ear lobule
.
J Craniofac Surg
.
2015 Nov
;
26
(
8
):
e739
40
. .
7.
Shad
J
,
Biswas
R
.
An infant with caudal appendage
.
BMJ Case Rep
.
2012
;
2012
:
bcr1120115160
. .
8.
Ledley
FD
.
Evolution and the human tail: a case report
.
N Engl J Med
.
1982 May
;
306
(
20
):
1212
5
. .
9.
Standfast
AL
.
The human tail
.
N Y State J Med
.
1992 Mar
;
92
(
3
):
116
.
10.
Wilkinson
CC
,
Boylan
AJ
.
Proposed caudal appendage classification system; spinal cord tethering associated with sacrococcygeal eversion
.
Childs Nerv Syst
.
2017 Jan
;
33
(
1
):
69
89
. .
11.
Lundberg
GD
,
Parsons
RW
.
A case of a human tail
.
Am J Dis Child
.
1962 Jul
;
104
:
72
3
. .
12.
Calonje
E
,
Wilson-Jones
E
.
Vascular tumors
. In:
Elder
D
,
Elenitsas
R
,
Jaworsky
C
,
Johnson
B
. Jr, editors.
Lever’s histopathology of the skin
.
Philadelphia
:
Lippincott-Raven
;
1997
.
13.
Biberstein
HH
,
Jessner
M
.
A cirsoid aneurysm in the skin: a case report
.
Dermatologica
.
1956
;
113
:
129
41
. .
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