How to write the diagnosis for left left scrotal hydrocele

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I now have enough information from the textbooks to provide a thorough answer. Here is a complete guide on how to write the diagnosis for a left scrotal hydrocele:

Writing the Diagnosis for Left Scrotal Hydrocele

1. Formal Clinical/Written Diagnosis

The correct way to write the diagnosis depends on the type and context:
SettingHow to Write It
Short surgical/clinical noteLeft scrotal hydrocele
Formal long case write-upPrimary left scrotal hydrocele OR Secondary left scrotal hydrocele
ICD-10 codingN43.2 (Other hydrocele)
Operative/procedure notePreoperative Diagnosis: Left hydrocele; Postoperative Diagnosis: Left hydrocele

2. Full Clinical Write-Up Structure (Long Case)

When writing a complete diagnosis in a clinical or surgical case format, you should include these elements:

Provisional / Final Diagnosis:

Left primary (idiopathic) scrotal hydrocele - or, if cause is known: Left secondary scrotal hydrocele secondary to [cause e.g., epididymo-orchitis / filariasis / testicular tumor]

Supporting the diagnosis - the features you document:

a) Clinical features supporting hydrocele:
  • Painless swelling of the left scrotum
  • Able to "get above the swelling" (meaning you can feel above it in the inguinal region - confirming it is scrotal, not inguinal/descending hernia)
  • Fluctuation test: positive
  • Translucency test: positive (red glow transmitted - the hallmark of hydrocele)
  • Testis impalpable separately within the swelling (in primary hydrocele the fluid surrounds the testis)
  • Dull on percussion (differentiates from hernia, which is resonant due to bowel)
  • Skin: normal color and temperature
b) Type of hydrocele (specify in diagnosis):
TypeKey FeatureWrite as
Primary (idiopathic)No underlying cause; middle-aged men; tense"Left primary scrotal hydrocele"
SecondarySmall, lax; secondary to infection/tumor"Left secondary scrotal hydrocele secondary to..."
CongenitalReduces when lying down, returns on standing; patent processus vaginalis"Left congenital communicating hydrocele"
InfantileEntire tunica + processus patent; does not communicate with peritoneum"Left infantile hydrocele"
Encysted hydrocele of cordSeparate from testis; moves with cord"Left encysted hydrocele of the cord"

3. Differential Diagnoses to Mention (when writing a case)

Per S Das - A Manual on Clinical Surgery, you should always note you have excluded:
  • Inguinal hernia (resonant, reducible, bowel sounds)
  • Haematocele (fluctuant but not translucent)
  • Spermatocele (testis palpable separately; fluid is milky)
  • Epididymal cyst (separate from testis; clear fluid)
  • Testicular tumor (heavy testis, loss of testicular sensation, not translucent) - excluded with ultrasound

4. Investigations to Write in Support of Diagnosis

  • Ultrasound scrotum - confirms fluid around testis, excludes malignancy (Bailey & Love)
  • Aspiration (if done): amber fluid, specific gravity 1.022-1.024, contains cholesterol and 6% albumin - supports hydrocele (S Das)

5. ICD-10 Codes

CodeDescription
N43.0Encysted hydrocele
N43.1Infected hydrocele
N43.2Other hydrocele (most used for left scrotal hydrocele)
N43.3Hydrocele, unspecified
For a left scrotal hydrocele without specification of type, use N43.2 (Other hydrocele). For a communicating/congenital type in a child, use N43.0.

Summary: The One-Line Diagnosis

"Left primary scrotal hydrocele" (if idiopathic) "Left secondary scrotal hydrocele secondary to [cause]" (if a cause is identified)
The diagnosis is confirmed clinically by a positive translucency test and supported by scrotal ultrasound. - S Das: A Manual on Clinical Surgery, 13th Ed., p. 626-630; Bailey and Love's Short Practice of Surgery, 28th Ed., p. 952-1094
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