ISSN - 0973-0958
Perineal Lipoma in a Newborn Baby 10/23/2017 00:00:00 https://www.pediatriconcall.com/Journal/images/journal_cover.jpg
   
 
Perineal Lipoma in a Newborn Baby
Shirin Joshi*, Swathi C*, Prajakta Joshi** Anant Bangar*, Dr. Rajeev Redkar*
*Department of Pediatric Surgery, Lilavati Hospital and Research Centre, Mumbai, India and **Department of Pediatrics, Holy Family Hospital, Mumbai, India.
Address for Correspondence
Dr. Rajeev Redkar, Consultant Pediatric Surgeon, A-491, Bandra reclamation, Bandra West 400050, Mumbai, India.
 
Email
rajeev.redkar@gmail.com
 
Keywords
Perineal mass, lipoma, excision
 
A new born female baby was born to a primigravida mother at 38 weeks of gestation by normal vaginal route at a tertiary hospital. The mother was registered during her pregnancy and antenatal scans were normal. Baby cried immediately after birth. Birth weight was 3.3 kg. After delivery, the baby was examined by a local pediatrician. On examination there was a solitary, non-tender, soft, oval shaped swelling of 5 x 3 cm on right side of the anal opening. There was no redness and overlying skin was normal (Figure 1). Labial minora, labia majora were normal. Urethral, vaginal and anal openings too were normally placed. There was no difficulty in passing urine and stools. The baby was sent to our institution for further management. Ultrasonography (USG) of the swelling showed 3.5 x 3 x 2.2 cm heterogeneous mass with vascular pedicle. USG of urinary tract was normal. Surgical excision of the mass was done (Figure 2). Histopathological examination showed mature adipose tissue, interspersed with collagen bands suggestive of fibro-lipoma. Baby was well post-operatively.

Figure 1 : Soft mass in the perineal region


Figure 2: Post-operative with scar and stool at anal verge


Congenital perineal lipomas are very rare with only 18 cases reported in the literature. (1-2) These lesions were more commonly associated with ano-rectal malformations. (3) These lesions are typically lobulated, round, or pedunculated subcutaneous masses that are smooth, soft, mobile, and non-tender. Perineal lipoma may arise from the mid-perineum but are most commonly lateral in location. The differential diagnosis includes lipoblastoma (a benign condition distinguishable from lipoma only on histology), infantile hemangioma, hamartoma and choristoma. Moreover, these lesions may be associated with external genital and anorectal malformations. Such anomalies include an accessory scrotum or labioscrotal fold, anal atresia, a rectoperineal or rectovestibular fistula, and a persistent cloaca. (2) Finally, ambiguous genitalia may be associated. (1,2) However, a phallus will be located in the midline, whereas most lipomas generally arise laterally. Evaluation before delivery with sonography and after birth by physical examination and magnetic resonance imaging is required to assess for associated anomalies, evaluate the blood supply, and define the extent of invasion to assist with pre-operative surgical planning. A complete evaluation of the uro-genital and anorectal tract is recommended, taking into account related anomalies described such as renal agenesis, anorectal malformations, scrotum and penile anomalies. (3-5) The treatment of a presumed lipoma is local excision with no anticipated recurrence.
 
Funding
None
Conflict of Interest
None
References :
  1. Chanda MN, Jamieson MA, Peonaru D. Congenital perineal lipoma presenting as “ambiguous genitalia”: a case report. J Pediatr Adolesc Gynecol. 2000;13:71-4.
  2. Redman JF, Ick KA, North PE. Perineal lipoma and an accessory labial fold in a female neonate. J Urol. 2001;166:1450.
  3. Wester T, Rintala R. Perineal lipomas associated with anorectal malformations. Pediatr Surg Int. 2006;22:979–81.
  4. Park KH, Hong JH. Perineal lipoma in association with scrotal anomalies in children. BJU Int. 2006;98:409–12.
  5. Wax JR, Pinette MG, Mallory B, Carpenter M, Winn S, Cartin A. Prenatal sonographic diagnosis of a perineal lipoma. J Ultrasound Med. 2010;29:1257–9.
Last Updated : 01 October 2017 Vol 14 Issue 4 Art #53
DOI: 10.7199/ped.oncall.2017.53
How to Cite URL :
Joshi S, C S, Joshi P, Bangar A, Redkar R D. Perineal Lipoma in a Newborn Baby. Pediatric Oncall Journal [serial online] 2017[cited 2017 October-December 1];14. Art #53. Available From : http://www.pediatriconcall.com/pediatric-journal/View/fulltext-articles/1129/J/0/0/591/0
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